ErrLookup › pandas-dev/pandas

pandas-dev/pandas

Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more · Python · 346 source files

Analyzed at 71959b8cb9 on 2026-08-07. 479 documented errors.

Code / MessageTypeSeverityTags
Unable to import required dependency {_dependency}. Please s
exception critical import, dependencies, numpy, environment
C extension: {_module} not built. If you want to import pand
exception critical import, build, c-extension, editable-install, cython
No such keys(s): {pat!r}
exception error config, options, typo, validation
Pattern matched multiple keys
exception error config, options, ambiguous-match
Must provide an even number of non-keyword arguments
validation error config, set-option, argument-validation
No such keys(s) for {pat=}
exception error config, describe-option, typo
You must specify at least 4 characters when resetting multip
validation error config, reset-option, safety-guard
You can only set the value of existing options
exception error config, options-attribute, setattr
No such option
exception error config, options-attribute, getattr
Provide an even amount of arguments as option_context(pat, v
validation error config, option-context, argument-validation
Option '{key}' has already been registered
exception error config, register-option, duplicate
Option '{key}' is a reserved key
exception error config, register-option, reserved
{k} is not a valid identifier
validation error config, register-option, identifier, validation
{k} is a python keyword
validation error config, register-option, keyword, validation
Path prefix to option '{option}' is already an option
exception error config, register-option, namespace-conflict
Option '{key}' is a prefix of an already-registered option
exception error config, register-option, prefix-conflict
Option '{key}' has already been defined as deprecated.
exception error config, deprecate-option, duplicate
Value must have type '{_type}'
validation error config, validator, type-check, numpy-scalars
Value must be an instance of {type_repr}
validation error config, validation, set-option, valueerror
Value must be one of {pp_values}
validation error config, validation, set-option, pytables, valueerror
Value must be a nonnegative integer or None
validation error config, validation, set-option, integer, valueerror
Value must be a callable
validation error config, validation, callable, set-option, valueerror
{cls_name} Expected type {cls}, found {type(left)} instead
exception error testing, assertion, type-check, assert-series-equal
{cls_name} Expected type {cls}, found {type(right)} instead
exception error testing, assertion, type-check, assert-series-equal
{obj} are different {message}
exception error testing, assertion, equality, diff, assertionerror
{left_base!r} is not {right_base!r}
exception error testing, assertion, numpy, memory, view, assertionerror
{left_base!r} is {right_base!r}
exception error testing, assertion, numpy, memory, copy, assertionerror
check_like must be False if check_index is False
validation error testing, assertion, assert-series-equal, argument-validation, valueerror
[datetimelike_compat=True] {left._values} is not equal to {r
exception error testing, assertion, datetime, tz, assert-series-equal, assertionerror
Cannot override builtin dialect.
validation error testing, csv, context-manager, valueerror
Can't determine version for {module.__name__}
exception error compat, dependencies, version, importerror, optional-dependency
`Import {install_name}` failed. {extra} Use pip, conda, or y
exception error compat, dependencies, import, optional-dependency, importerror
Pandas requires version '{minimum_version}' or newer of '{pa
exception error compat, dependencies, version, optional-dependency, importerror
Please upgrade numpy to >= {_min_numpy_ver} to use this pand
exception critical compat, numpy, version, import, importerror, startup
numpy operations are not valid with groupby. Use .groupby(..
exception error groupby, numpy, unsupported-function-call, aggregation, kwargs
`axis` must be fewer than the number of dimensions ({ndim})
validation error axis, validation, series, reduction
The numba engine only supports using string or numeric colum
validation error numba, engine, dtype, columns, apply
You cannot access the property {name}
exception error accessor, delegate, dtype, property
The property {name} cannot be set
exception error accessor, delegate, property, assignment
You cannot call method {name}
exception error accessor, delegate, method, dtype
{func_name} requires a Series, Index, ExtensionArray, np.nda
validation error arraylike, validation, factorize, type-error
only list-like objects are allowed to be passed to isin(), y
validation error isin, arraylike, validation, membership
only list-like objects are allowed to be passed to isin(), y
validation error isin, arraylike, validation, membership
bins argument only works with numeric data.
validation error value-counts, bins, numeric, dtype
Array with ndim > 2 is not supported.
validation error rank, ndim, ndarray, validation
pd.api.extensions.take requires a numpy.ndarray, ExtensionAr
validation error take, arraylike, validation, extensions
periods must be an integer
validation error diff, periods, integer, validation
cannot diff {type(arr).__name__} on axis={axis}
validation error diff, axis, extension-array, validation
{type(arr).__name__} has no 'diff' method. Convert to a suit
validation error diff, extension-array, dtype, conversion
Only np.ndarray, ExtensionArray, and Index objects are allow
validation error safe-sort, arraylike, validation, sorting
Only list-like objects or None are allowed to be passed to s
validation error safe-sort, codes, arraylike, validation
values should be unique if codes is not None
validation error safe-sort, unique, codes, validation
na_action must either be 'ignore' or None, {na_action} was p
validation error map, na-action, validation
Named aggregation is not supported when {axis=}.
exception error apply, named-aggregation, axis, dataframe
invalid value for result_type, must be one of {None, 'reduce
validation error pandas, apply, result-type, validation, valueerror
Function names must be unique if there is no new column name
exception error pandas, transform, duplicate, specificationerror, validation
Transform function failed
exception error pandas, transform, valueerror, user-function, chained-exception
Function did not transform
exception error pandas, transform, valueerror, contract, shape-mismatch
No transform functions were provided
exception error pandas, transform, valueerror, empty-input, validation
cannot combine transform and aggregation operations
exception error pandas, agg, transform, valueerror, mixed-operations
cannot perform both aggregation and transformation operation
exception error pandas, agg, apply, valueerror, mixed-operations, dict
Operation {func} does not support axis=1
exception error pandas, apply, axis, valueerror, string-dispatch
The 'numba' engine doesn't support list-like/dict likes of c
exception error pandas, apply, numba, notimplementederror, engine
nested renamer is not supported
exception error pandas, agg, apply, specificationerror, nested-renamer, deprecation
Label(s) {list(cols)} do not exist
exception error pandas, agg, apply, keyerror, missing-column, validation
'{}' is not a valid function for '{type(obj).__name__}' obje
exception error pandas, apply, attributeerror, string-dispatch, method-name
axis other than 0 is not supported
exception error pandas, agg, apply, axis, notimplementederror, list-like
by_row={by_row} not allowed
exception error pandas, apply, by-row, valueerror, dataframe, validation
Column {colname} must have a numeric dtype. Found '{dtype}'
exception error pandas, apply, numba, valueerror, dtype, numeric
Column {colname} is backed by an extension array, which is n
exception error pandas, apply, numba, valueerror, extension-array, nullable
the 'numba' engine doesn't support lists of callables yet
exception error pandas, apply, numba, notimplementederror, list-of-callables
the 'numba' engine doesn't support using a string as the cal
exception error pandas, apply, numba, notimplementederror, string-dispatch
the 'numba' engine doesn't support using a numpy ufunc as th
exception error pandas, numba, apply, ufunc, engine
the 'numba' engine doesn't support result_type='broadcast'
exception error pandas, numba, apply, broadcast, engine
too many dims to broadcast
exception error pandas, apply, broadcast, shape, numpy
cannot broadcast result
exception error pandas, apply, broadcast, shape, length-mismatch
Parallel apply is not supported when raw=False and engine='n
exception error pandas, numba, apply, parallel, engine
The index/columns must be unique when raw=False and engine='
exception error pandas, numba, apply, duplicate-index, engine
Must provide 'func' or tuples of '(column, aggfunc).
exception error pandas, agg, missing-argument, named-aggregation
func is expected but received {} in **kwargs.
exception error pandas, agg, named-aggregation, type-error
Must provide 'func' or named aggregation **kwargs.
exception error pandas, agg, named-aggregation, missing-argument
overflow in timedelta operation
exception error pandas, timedelta, datetime, cumsum, overflow, int64
No accumulation for {func} implemented on BaseMaskedArray
exception error pandas, accumulation, datetimelike, internal, dispatch
No masked accumulation defined for dtype {values.dtype.type}
exception error pandas, accumulation, masked-array, dtype, extension-array
No accumulation for {func} implemented on BaseMaskedArray
exception error pandas, accumulation, masked-array, internal, dispatch
cannot assign mismatch length to masked array
exception error pandas, where, mask, putmask, length-mismatch
putmask: mask and data must be the same size
exception error pandas, where, mask, putmask, shape-mismatch
Cannot compare types {!r} and {!r}
exception error pandas, replace, type-mismatch, comparison
Cannot apply ufunc {ufunc} to mixed DataFrame and Series inp
exception error pandas, numpy, ufunc, dataframe, series, alignment
Invalid side: {side}. Side must be one of 'left', 'right', '
exception error validation, string, pyarrow, argument-error
invalid normalization form
exception error validation, string, pyarrow, unicode
replace is not supported with a re.Pattern, callable repl, c
exception error pyarrow, string, regex, not-implemented, compatibility
contains not implemented with {flags=}
exception error pyarrow, string, regex, not-implemented, compatibility
Encountered an NA value with skipna=False
exception error na-handling, reductions, validation
Cannot modify read-only array
exception error read-only, in-place, memory, mutation
to_concat must have the same dtype
exception error concat, dtype, validation
Can only use the '.list' accessor with 'list[pyarrow]' dtype
exception error pyarrow, list-accessor, dtype, attribute-error
Can only use the '.struct' accessor with 'struct[pyarrow]' d
exception error pyarrow, struct-accessor, dtype, attribute-error
key must be an int or slice, got {type(key).__name__}
exception error pyarrow, list-accessor, indexing, argument-error
'{type(self).__name__}' object is not iterable
exception error pyarrow, list-accessor, iteration, type-error
name_or_index must be an int, str, bytes, pyarrow.compute.Ex
exception error pyarrow, struct-accessor, input-validation, indexing
pyarrow>={PYARROW_MIN_VERSION} is required for PyArrow backe
exception critical pyarrow, dependency, environment, import-error
Unsupported type '{type(values)}' for ArrowExtensionArray
exception error pyarrow, constructor, type-validation, internal-api
Converting strings to {pa_type} is not implemented.
exception error pyarrow, dtype-conversion, string-parsing, not-implemented
Only integers, slices and integer or boolean arrays are vali
exception error pyarrow, indexing, dtype-validation, numpy
only integers, slices (`:`), ellipsis (`...`), numpy.newaxis
exception error pyarrow, indexing, scalar, label-vs-position
Unable to avoid copy while creating an array as requested.
exception error pyarrow, numpy-interop, copy-semantics, conversion
__invert__ is not supported for string dtypes
exception error pyarrow, unary-op, string-dtype, type-error
unary '-' not supported for dtype '{self.dtype}'
exception error pyarrow, unary-op, dtype-validation, type-error
{op.__name__} not implemented for {type(other)}
exception error pyarrow, comparison, operand-validation, not-implemented
operation '{op.__name__}' not supported for dtype '{self.dty
exception error pyarrow, arithmetic, string-dtype, type-error
Can only string multiply by an integer.
exception error pyarrow, arithmetic, string-repeat, type-error
Lengths of operands do not match: {len(self)} != {len(other)
exception error pyarrow, arithmetic, length-mismatch, string-dtype
DateOffset {other} is intra-day and cannot be applied to dat
exception error pyarrow, date-arithmetic, dateoffset, dtype-mismatch
invalid na_position: {na_position}
exception error pyarrow, sorting, input-validation, argsort
Cannot modify read-only array
validation error pyarrow, sorting, readonly, mutation-guard
ExtensionArray.fillna does not support filling with a dict.
validation error pyarrow, fillna, dict-value, api-misuse
Length of 'value' does not match. Got ({len(value)}) expect
validation error arrow, fillna, length-mismatch, validation
Invalid value '{value!s}' for dtype '{self.dtype}'
validation error arrow, fillna, type-coercion, dtype
{type(self)} does not support reshape as backed by a 1D pyar
exception error arrow, reshape, not-implemented, numpy-interop
searchsorted requires array to be sorted, which is impossibl
validation error arrow, searchsorted, na, sorting
cannot do a non-empty take
exception error arrow, take, empty-array, indexing
out of bounds value in 'indices'.
exception error arrow, take, out-of-bounds, indexing
operation '{name}' not supported for dtype '{self.dtype}'
validation error arrow, accumulate, cumsum, dtype, pyarrow
'{type(self).__name__}' with dtype {self.dtype} does not sup
validation error arrow, reduce, pyarrow-version, capability
'{type(self).__name__}' with dtype {self.dtype} does not sup
validation error arrow, reduce, pyarrow-version, dtype, kernel
index {key} is out of bounds for axis 0 with size {n}
exception error arrow, setitem, out-of-bounds, indexing
Length of indexer and values mismatch
validation error arrow, setitem, shape-mismatch, indexing
Cannot interpolate with {self.dtype} dtype
validation error arrow, interpolate, dtype, numeric
interpolate is not implemented for dtype={self.dtype}
exception error arrow, interpolate, not-implemented, temporal
dtype '{self.dtype}' does not support operation '{how}'
validation error arrow, groupby, string-dtype, aggregation
dtype '{self.dtype}' does not support operation 'quantile'
validation error arrow, groupby, quantile, string-dtype
count not implemented with {flags=}
exception error arrow, str-accessor, regex, count, flags
repeat is not implemented when repeats is {type(repeats).__n
exception error pyarrow, string-accessor, not-implemented
Only flags=0 is implemented.
exception error pyarrow, string-accessor, regex, not-implemented
{pat=} must contain a symbolic group name.
validation error pyarrow, string-accessor, regex, validation
expected a string object, not {type(pat).__name__}
validation error pyarrow, string-accessor, type-error
'{self.dtype}' does not have duration components
exception error pyarrow, datetime-accessor, duration, type-mismatch
as_unit not implemented for {pa_type}
exception error pyarrow, datetime-accessor, not-implemented
ambiguous is not supported.
exception error pyarrow, datetime-accessor, dst, not-implemented
nonexistent is not supported.
exception error pyarrow, datetime-accessor, dst, not-implemented
Must specify a valid frequency: {freq}
validation error pyarrow, datetime-accessor, frequency, validation
{freq=} is not supported
validation error pyarrow, datetime-accessor, frequency, validation
to_pydatetime cannot be called with {self.dtype.pyarrow_dtyp
validation error pyarrow, datetime-accessor, type-mismatch
{ambiguous=} is not supported
exception error pyarrow, datetime-accessor, dst, not-implemented
{nonexistent=} is not supported
exception error pyarrow, datetime-accessor, dst, not-implemented
Cannot convert tz-naive timestamps, use tz_localize to local
validation error pyarrow, datetime-accessor, timezone, type-error
Disallowed deserialization of 'arrow.py_extension_type': sto
exception critical security, pyarrow, deserialization, cve, parquet, pickle
Cannot modify read-only array
validation error extension-array, readonly, mutation, immutability
{type(self)} does not implement __setitem__.
exception error extension-array, subclass, not-implemented, mutation
can only convert an array of size 1 to a Python scalar
validation error extension-array, scalar-conversion, validation
index must be an integer, got {type(index)}
validation error extension-array, type-error, indexing
Encountered an NA value with skipna=False
validation error extension-array, missing-data, reduction, validation
{type(self).__name__} does not implement interpolate
exception error extension-array, interpolate, not-implemented, subclass
cannot perform {name} with type {self.dtype}
exception error extension-array, accumulate, cumsum, not-implemented, subclass
'{type(self).__name__}' with dtype {self.dtype} does not sup
validation error extension-array, reduce, reduction, dtype-mismatch
Default 'empty' implementation is invalid for dtype='{dtype}
exception error extension-array, empty, subclass, internal, round-trip
Cannot round dtype {self.dtype} as it is non-numeric
validation error extension-array, round, dtype-mismatch, numeric
dtype '{self.dtype}' does not support operation '{how}'
validation error groupby, string-dtype, aggregation, dtype-mismatch
function is not implemented for this dtype: {self.dtype}
exception error groupby, extension-array, not-implemented, subclass
dtype '{self.dtype}' does not support operation 'quantile'
validation error groupby, quantile, string-dtype, object-dtype, dtype-mismatch
Cannot use quantile with bool dtype
validation error groupby, quantile, boolean, dtype-mismatch
groupby first/last only supports 1D ExtensionArrays
exception error groupby, extension-array, first-last, ndim, internal
Expected array of boolean type, got {array.type} instead
validation error arrow, boolean, dtype-mismatch, interoperability
cannot pass mask for BooleanArray input
validation error boolean, mask, coercion, api-misuse
Need to pass bool-like values
validation error boolean, coercion, ndarray, validation
values.shape and mask.shape must match
validation error boolean, mask, shape-mismatch, validation
values should be boolean numpy array. Use the 'pd.array' fun
exception error boolean, constructor, api-misuse, ndarray
{s} cannot be cast to bool
exception error boolean, string-parsing, true-values, read-csv
'other' should be pandas.NA or a bool. Got {type(other).__na
exception error boolean, logical-op, kleene, type-mismatch
Lengths must match
exception error boolean-array, length-mismatch, logical-ops, valueerror
Lengths must match.
exception error categorical, length-mismatch, comparison, valueerror
Unordered Categoricals can only compare equality or not
exception error categorical, unordered, comparison, ordinal, typeerror
Categoricals can only be compared if 'categories' are the sa
exception error categorical, comparison, categories-mismatch, typeerror
Cannot compare a Categorical for op {opname} with type {type
exception error categorical, comparison, list-like, typeerror
Categorical input must be list-like
exception error categorical, constructor, scalar-input, typeerror
> 1 ndim Categorical are not supported at this time
exception error categorical, constructor, ndim, notimplementederror
'values' is not ordered, please explicitly specify the categ
exception error categorical, ordered, factorize, unsortable, typeerror
Cannot convert float NaN to integer
exception error categorical, astype, nan, integer, valueerror
Cannot cast {self.categories.dtype} dtype to {dtype}
exception error categorical, astype, dtype-cast, valueerror
The categories must be provided in 'categories' or 'dtype'.
exception error categorical, from-codes, missing-categories, valueerror
new categories need to have the same number of items as the
exception error categorical, categories-setter, length-mismatch, valueerror
items in new_categories are not the same as in old categorie
exception error categorical, reorder-categories, valueerror
new categories must not include old categories: {already_inc
exception error categorical, add-categories, duplicate, valueerror
removals must all be in old categories: {not_included}
exception error categorical, remove-categories, missing, valueerror
Cannot setitem on a Categorical with a new category ({fill_v
exception error categorical, setitem, new-category, typeerror
codes cannot contain NA values
exception error categorical, from-codes, nullable-integer, na, valueerror
codes need to be array-like integers
exception error categorical, from-codes, integer-codes, dtype, valueerror
codes need to be between -1 and len(categories)-1
exception error categorical, from-codes, out-of-range, validation, valueerror
Unable to avoid copy while creating an array as requested.
exception error categorical, numpy, array-protocol, copy, valueerror
Object with dtype {self.dtype} cannot perform the numpy op {
exception error categorical, numpy-ufunc, dtype
Categorical is not ordered for operation {op} you can use .a
exception error categorical, ordered, min-max
invalid na_position: {na_position!r}
exception error categorical, sort, validation
Cannot set a Categorical with another, without identical cat
exception error categorical, setitem, categories
Cannot setitem on a Categorical with a new category, set the
exception error categorical, setitem, categories
Accumulation {name} not supported for {type(self)}
exception error categorical, accumulation, cumsum
axis {axis} is out of bounds for array of dimension {first.n
exception error categorical, concat, axis
{dtype} type does not support {how} operations
exception error categorical, groupby, aggregation
Cannot perform {how} with non-ordered Categorical
exception error categorical, groupby, ordered
Can only use .cat accessor with a 'category' dtype
exception error categorical, accessor, dtype
Input must be list-like
exception error categorical, factorize, list-like
Unable to avoid copy while creating an array as requested.
exception error datetime, numpy, copy
Converting from {self.dtype} to {dtype} is not supported. Do
exception error datetime, astype, integer
Cannot cast {type(self).__name__} to dtype {dtype}
exception error datetime, astype, float
Lengths must match
exception error datetime, comparison, length
value should be a '{self._scalar_type.__name__}' or 'NaT'. G
exception error datetime, scalar, validation
value should be a '{self._scalar_type.__name__}', 'NaT', or
exception error datetime, listlike, dtype
Cannot modify read-only array
exception error read-only, inplace, fillna, datetimelike
cannot add {type(self).__name__} and {type(other).__name__}
exception error addition, datetime, timedelta, type-mismatch
cannot subtract a datelike from a {type(self).__name__}
exception error subtraction, datetime, operand-order, timedelta
cannot add indices of unequal length
exception error length-mismatch, subtraction, alignment, datetime-array
cannot add Period to a {type(self).__name__}
exception error addition, period, datetime, type-mismatch
Cannot add {type(self).__name__} and {type(NaT).__name__}
exception error addition, nat, period, type-mismatch
cannot subtract {type(other).__name__} from {type(self).__na
exception error subtraction, period, type-mismatch
Accumulation {name} not supported for {type(self)}
exception error accumulation, cumsum, datetime, unsupported-op
cannot subtract {type(self).__name__} from {type(other).__na
exception error subtraction, rsub, operand-order, datetime
cannot subtract {type(self).__name__} from {other.dtype}
exception error subtraction, rsub, period, timedelta
cannot subtract {type(self).__name__} from {type(other).__na
exception error subtraction, rsub, operand-order, timedelta
mean is not implemented for {type(self).__name__} since the
exception error reduction, mean, period, ambiguous
abs(axis) must be less than ndim
exception error axis, median, validation, dimension
datetime64 type does not support operation '{how}'
exception error groupby, reduction, datetime, unsupported-op
'{how}' with datetime64 dtypes is no longer supported. Use (
exception error groupby, any, all, datetime, deprecated
Period type does not support {how} operations
exception error groupby, reduction, period, unsupported-op
'{how}' with PeriodDtype is no longer supported. Use (obj !=
exception error groupby, any, all, period, deprecated
timedelta64 type does not support {how} operations
exception error timedelta, reduction, groupby, type-error
'std' and 'sem' are not valid for PeriodDtype
exception error period, reduction, groupby, type-error
Inferred frequency {inferred} from passed values does not co
exception error datetime, frequency, constructor, validation
Supported units are 's', 'ms', 'us', 'ns'
exception error datetime, timedelta, unit, resolution, validation
The 'sort' keyword in {type(self).__name__}.factorize is not
exception error factorize, datetime, extension-array, not-implemented
Cannot create a {cls_name} from a MultiIndex.
exception error multiindex, constructor, datetime, type-error
periods must be an integer, got {periods}
exception error date-range, constructor, validation, type-error
{dtype=} does not have a resolution.
exception error arrow, dtype, datetime, timedelta, validation
Values resolution does not match dtype.
exception error datetime, dtype, resolution, internal
Passed data is timezone-aware, incompatible with 'tz=None'.
exception error datetime, timezone, constructor, validation
Must provide freq argument if no data is supplied
exception error date-range, frequency, constructor, validation
Of the four parameters: start, end, periods, and freq, exact
exception error date-range, constructor, validation
Neither `start` nor `end` can be NaT
exception error date-range, nat, constructor, validation
'unit' must be one of 's', 'ms', 'us', 'ns'
exception error date-range, unit, resolution, validation
'value' should be a Timestamp.
exception error datetime, scalar, setitem, type-error
Cannot directly set timezone. Use tz_localize() or tz_conver
exception error datetime, timezone, read-only, attribute-error
Casting to unit-less dtype 'datetime64' is not supported. Pa
exception error datetime, astype, unit, numpy, type-error
Cannot compare tz-naive and tz-aware datetime-like objects.
exception error datetime, timezone, comparison, pandas
Cannot compare tz-naive and tz-aware datetime-like objects
exception error datetime, timezone, comparison, pandas
Cannot convert tz-naive timestamps, use tz_localize to local
exception error datetime, timezone, tz-convert, pandas
The nonexistent argument must be one of 'raise', 'NaT', 'shi
exception error datetime, timezone, dst, tz-localize, pandas
Already tz-aware, use tz_convert to convert.
exception error datetime, timezone, tz-localize, pandas
You must pass a freq argument as current index has none.
exception error datetime, period, frequency, pandas
DatetimeIndex has mixed timezones
exception error datetime, timezone, construction, pandas
dtype {data.dtype} cannot be converted to datetime64[ns]
exception error datetime, dtype, timedelta, pandas
Passing PeriodDtype data is invalid. Use `data.to_timestamp(
exception error datetime, period, dtype, pandas
data is already tz-aware {inferred_tz}, unable to set specif
exception error datetime, timezone, construction, pandas
Passing in 'datetime64' dtype with no precision is not allow
exception error datetime, dtype, numpy, pandas
Unexpected value for 'dtype': '{dtype}'. Must be 'datetime64
exception error datetime, dtype, pandas
cannot supply both a tz and a dtype with a tz
exception error datetime, timezone, dtype, pandas
Cannot pass both a timezone-aware dtype and tz=None
exception error datetime, timezone, dtype, pandas
cannot supply both a tz and a timezone-naive dtype (i.e. dat
exception error datetime, timezone, dtype, pandas
Offset {offset} did not increment date
exception error datetime, date-range, offset, pandas
Offset {offset} did not decrement date
exception error datetime, date-range, offset, pandas
cannot safely cast non-equivalent {values.dtype} to {np.dtyp
exception error integer, nullable, dtype, casting, pandas
{cls.__name__}(...) must be called with a collection of some
exception error interval, construction, scalar, pandas
dtype must be an IntervalDtype, got {dtype}
exception error interval, dtype, construction, pandas
closed keyword does not match dtype.closed
exception error interval, dtype, constructor, validation
must not have differing left [{type(left).__name__}] and rig
exception error interval, dtype, constructor, type-mismatch
category, object, and string subtypes are not supported for
exception error interval, dtype, categorical, string, constructor
Period dtypes are not supported, use a PeriodIndex instead
exception error interval, period, dtype, constructor
left and right must have the same time zone, got '{left.tz}'
exception error interval, datetime, timezone, constructor
Left and right arrays must have matching signedness. Got {le
exception error interval, dtype, integer, signedness, constructor
{name}.from_tuples requires tuples of length 2, got {d}
exception error interval, from-tuples, input-validation
{name}.from_tuples received an invalid item, {d}
exception error interval, from-tuples, input-validation, type-mismatch
invalid dtype: {dtype}
exception error interval, dtype, validation, internal
left and right must have the same length
exception error interval, length-mismatch, validation, alignment
missing values must be missing in the same location both lef
exception error interval, missing-values, validation, nan
left side of interval must be <= right side
exception error interval, bounds, validation, ordering
multi-dimensional indexing not allowed
exception error interval, indexing, multi-dimensional
Cannot modify read-only array
exception error interval, read-only, setitem, numpy
Lengths must match to compare
exception error interval, comparison, length-mismatch, broadcasting
ExtensionArray.fillna does not support filling with a dict.
exception error interval, fillna, dict, extension-array
limit must be None
exception error interval, fillna, limit, extension-array
Cannot convert {self.dtype} to {dtype}; subtypes are incompa
exception error interval, astype, dtype, datetime, casting
Cannot cast {type(self).__name__} to dtype {dtype}
exception error interval, astype, casting, dtype
Intervals must all be closed on the same side.
exception error interval-array, concat, validation
'value' should be an interval type, got {type(value)} instea
exception error interval-array, type-error, setitem
'value' should be a compatible interval type, got {type(valu
exception error interval-array, dtype, setitem
can only insert Interval objects and NA into an IntervalArra
exception error interval-array, type-error, insert
Cannot set float NaN to integer-backed IntervalArray
exception error interval-array, dtype, missing-data, setitem
`other` must be Interval-like, got {type(other).__name__}
exception error interval-array, type-error, overlaps
invalid option for 'closed': {closed}
exception error interval-array, validation, argument
Unable to avoid copy while creating an array as requested.
exception error interval-array, numpy, copy
Conversion to arrow with subtype '{self.dtype.subtype}' is n
exception error interval-array, pyarrow, interop
Not supported to convert IntervalArray to type with differen
exception error interval-array, pyarrow, schema, interop
Not supported to convert IntervalArray to '{type}' type
exception error interval-array, pyarrow, type-error, interop
contains not implemented for two intervals
exception error interval-array, not-implemented, contains
mask should be boolean numpy array. Use the 'pd.array' funct
exception error masked-array, constructor, type-error
values.shape must match mask.shape
exception error masked-array, shape-mismatch, constructor
Default 'empty' implementation is invalid for dtype='{dtype}
exception error masked-array, subclassing, dtype
Cannot modify read-only array
exception error masked-array, readonly, fill, mutation
Invalid value '{value!s}' for dtype '{self.dtype}'
exception error masked-array, dtype, setitem, type-error
cannot convert to '{dtype}'-dtype NumPy array with missing v
exception error masked-array, to-numpy, missing-values, na-value
cannot convert NA to integer
exception error masked-array, astype, missing-values, integer
cannot convert float NaN to bool
exception error masked-array, astype, missing-values, boolean
Unable to avoid copy while creating an array as requested.
exception error masked-array, numpy-interop, copy, missing-values
can only perform ops with 1-d structures
exception error masked-array, arithmetic, ndim, broadcasting
operator '{op_name}' not implemented for bool dtypes
exception error masked-array, arithmetic, boolean, na
Lengths must match to compare
exception error masked-array, comparison, length-mismatch, alignment
searchsorted requires array to be sorted, which is impossibl
exception error masked-array, searchsorted, missing-values, sorting
interpolate is not implemented for dtype={self.dtype}
exception error masked-array, interpolate, dtype, not-implemented
Expected array of {self} type, got {array.type} instead
exception error numeric-array, from-arrow, pyarrow, dtype
invalid dtype specified {dtype}
exception error numeric-array, dtype, validation
{values.dtype} cannot be converted to {name}
exception error numeric-array, coercion, boolean, type-inference
values must be a 1D list-like
exception error numeric-array, ndim, validation
Cannot cast NaN value to Integer dtype.
exception error numeric-array, integer, nan, casting
mask must be a 1D list-like
exception error numeric-array, mask, ndim, validation
values should be {descr} numpy array. Use the 'pd.array' fun
exception error numeric-array, constructor, dtype, api-misuse
'values' must be a NumPy array, not {type(values).__name__}
exception error numpy, constructor, type-validation, pandas-arrays
NumpyExtensionArray must be 1-dimensional.
exception error numpy, constructor, dimension, pandas-arrays
Invalid value '{value!s}' for dtype '{self.dtype}'
exception error dtype, setitem, type-coercion, pandas-arrays
Cannot interpolate with {self.dtype} dtype
exception error interpolate, dtype, numeric, pandas-arrays
Invalid dtype {dtype} for PeriodArray
exception error period, dtype, constructor, pandas-arrays
Incorrect dtype
exception error period, series, dtype, constructor, pandas-arrays
dtype is not specified and cannot be inferred
exception error period, dtype, freq, constructor, pandas-arrays
PeriodArray does not allow floating point in construction
exception error period, dtype, float, constructor, pandas-arrays
Not enough parameters to construct Period range
exception error period, range, constructor, pandas-arrays
'value' should be a Period. Got '{value}' instead.
exception error period, scalar, setitem, pandas-arrays
Unable to avoid copy while creating an array as requested.
exception error period, numpy, copy, conversion, pandas-arrays
Not supported to convert PeriodArray to array with different
exception error period, arrow, freq, conversion, pandas-arrays
Not supported to convert PeriodArray to '{type}' type
exception error period, arrow, conversion, pandas-arrays
Cannot add or subtract timedelta64[ns] dtype from {self.dtyp
exception error period, arithmetic, timedelta, freq, pandas-arrays
Cannot add/subtract timedelta-like from PeriodArray that is
exception error period, arithmetic, timedelta, freq, pandas-arrays
dtype must be PeriodDtype
exception error period, dtype, validation, pandas-arrays
specified freq and dtype are different
exception error period, freq, dtype, validation, pandas-arrays
Wrong dtype: {data.dtype}
exception error period, datetime, dtype, conversion, pandas-arrays
Of the three parameters: start, end, and periods, exactly tw
exception error period, range, validation, pandas-arrays
start and end must have same freq
exception error pandas, period, period-range, frequency, dtype-validation
start and end must not be NaT
exception error pandas, period, period-range, nat, validation
Could not infer freq from start/end
exception error pandas, period, period-range, internal, unreachable
Quarter must be 1 <= q <= 4
exception error pandas, period, period-range, quarter, bounds-check
cannot convert float NaN to integer
exception error pandas, period, period-range, nan, dtype-coercion
Mismatched Period array lengths
exception error pandas, period, period-range, shape-mismatch, broadcast
Can only use the '.sparse' accessor with Sparse data.
exception error pandas, sparse, accessor, dtype-validation
Column length mismatch: {len(columns)} vs. {K}
exception error pandas, sparse, dataframe, shape-mismatch, scipy
Index length mismatch: {len(index)} vs. {N}
exception error pandas, sparse, dataframe, shape-mismatch, scipy
Cannot construct {type(self).__name__} from scalar data. Pas
exception error pandas, sparse, sparse-array, type-error, scalar
'data' must have a single column, not '{ncol}'
exception error pandas, sparse, sparse-array, scipy, shape-mismatch
Unable to avoid copy while creating an array as requested.
exception error pandas, sparse, sparse-array, numpy, copy-protocol
Cannot modify read-only array
exception error pandas, sparse, sparse-array, read-only, immutability
SparseArray does not support item assignment via setitem
exception error pandas, sparse, sparse-array, setitem, immutable
SparseArray does not support in-place sort
exception error pandas, sparse, sparse-array, sort, not-implemented
ExtensionArray.fillna does not support filling with a dict.
exception error pandas, sparse, sparse-array, fillna, dict
limit must be None
exception error pandas, sparse, sparse-array, fillna, limit
Cannot slice with Ellipsis
exception error pandas, sparse, sparse-array, indexing, ellipsis
only integers, slices (`:`), ellipsis (`...`), numpy.newaxis
exception error pandas, sparse, sparse-array, indexing, indexerror
Cannot slice with '{key}'
exception error sparse, indexing, getitem
index is out of bounds: must be an integer between -{n} and
exception error sparse, indexing, bounds, out-of-bounds
'indices' must be an array, not a scalar '{indices}'.
exception error sparse, take, scalar, indexing
cannot perform {name} with type {self.dtype}
exception error sparse, reductions, dtype, unsupported
axis(={axis}) out of bounds
exception error sparse, cumsum, axis, bounds
Encountered an NA value with skipna=False
exception error sparse, argmax, skipna, na
length mismatch: {len(self)} vs. {len(other)}
exception error sparse, arithmetic, length-mismatch, alignment
operands have mismatched length {len(self)} and {len(other)}
exception error sparse, comparison, length-mismatch, alignment
expected dimension <= 1 data
exception error sparse, constructor, ndim, shape
must be block or integer type
exception error sparse, constructor, kind, validation
Expected coo_matrix. Got {type(A).__name__} instead.
exception error scipy, sparse, type-error, conversion
Storage must be 'python' or 'pyarrow'. Got {storage} instead
exception error string-dtype, validation, config, storage
pyarrow>={PYARROW_MIN_VERSION} is required for PyArrow backe
exception error pyarrow, dependency, import-error, string-dtype
'na_value' must be np.nan or pd.NA, got {na_value}
exception error string-dtype, na-value, validation
'construct_from_string' expects a string, got {type(string)}
exception error string-dtype, type-error, construct-from-string
Cannot construct a '{cls.__name__}' from '{string}'
exception error string-dtype, type-error, construct-from-string
Cannot change data-type for string array.
exception error string-array, view, type-error, memory
StringArray requires a sequence of strings or pandas.NA
exception error string-array, validation, construction
StringArray requires a sequence of strings or pandas.NA. Got
exception error string-array, dtype, validation, construction
StringArray requires a sequence of strings or NaN
exception error string-array, validation, nan-semantics, construction
StringArray requires a sequence of strings or NaN. Got '{sel
exception error string-array, dtype, validation, nan-semantics, construction
Invalid value '{value}' for dtype '{self.dtype}'. Value shou
exception error string-array, scalar, index, type-error
Invalid value for dtype 'str'. Value should be a string or m
exception error string-array, setitem, type-error, bulk-assign
Cannot modify read-only array
exception error string-array, readonly, setitem, memory
setting an array element with a sequence.
exception error string-array, setitem, broadcasting, shape
Cannot perform reduction '{name}' with string dtype
exception error string-array, reduction, type-error, numeric
operation '{name}' not supported for dtype '{self.dtype}'
exception error string-array, accumulate, type-error, cumprod
searchsorted requires array to be sorted, which is impossibl
exception error string-array, searchsorted, missing-values, sort
Lengths of operands do not match: {len(self)} != {len(other)
exception error string-array, comparison, broadcasting, shape
Cannot multiply StringArray by bools. Explicitly cast to int
exception error string-array, arithmetic, boolean, typeerror
pyarrow>={PYARROW_MIN_VERSION} is required for PyArrow backe
exception error pyarrow, importerror, dependencies, string-arrow
ArrowStringArray requires a PyArrow (chunked) array of large
exception error pyarrow, string-arrow, dtype-mismatch, valueerror
Invalid value '{item}' for dtype 'str'. Value should be a st
exception error string-arrow, insert, typeerror, missing-values
Invalid value '{value}' for dtype 'str'. Value should be a s
exception error string-arrow, setitem, typeerror, dtype-coercion
Invalid value for dtype 'str'. Value should be a string or m
exception error string-arrow, setitem, array-assignment, typeerror
Cannot perform reduction '{name}' with string dtype
exception error string-arrow, reduction, aggregation, typeerror
bad operand type for unary +: '{self.dtype}'
exception error string-arrow, unary-operator, typeerror
Values resolution does not match dtype.
exception error timedelta, dtype-mismatch, resolution, valueerror
Must provide freq argument if no data is supplied
exception error timedelta, timedelta-range, freq, valueerror
Of the four parameters: start, end, periods, and freq, exact
exception error timedelta, timedelta-range, argument-validation, valueerror
'unit' must be one of 's', 'ms', 'us', 'ns'
exception error timedelta, unit, resolution, valueerror
'value' should be a Timedelta.
exception error timedelta, scalar, typeerror, valueerror
Cannot convert from {self.dtype} to {dtype}. Supported resol
exception error timedelta, astype, resolution, valueerror
cumprod not supported for Timedelta.
exception error timedelta, cumprod, accumulation, typeerror
cannot add the type {type(other).__name__} to a {type(self).
exception error timedelta, dateoffset, arithmetic, typeerror
Overflow in timedelta multiplication
exception error timedelta, overflow, arithmetic, outofbounds
Overflow in int64 multiplication
exception error timedelta, overflow, int-multiplication, outofbounds
Cannot multiply '{self.dtype}' by bool, explicitly cast to i
exception error timedelta, boolean, arithmetic, typeerror
Cannot multiply with {type(other).__name__}
exception error timedelta, typeerror, arithmetic, numpy-2
Cannot multiply with unequal lengths
exception error timedelta, valueerror, shape-mismatch, arithmetic
Overflow in timedelta division
exception error timedelta, overflow, division, float, gh-43178
Cannot divide {type(other).__name__} by {type(self).__name__
exception error timedelta, typeerror, division, operand-order
Cannot divide vectors with unequal lengths
exception error timedelta, valueerror, shape-mismatch, division
{err.args}
exception error timedelta, overflow, conversion, to-timedelta
dtype {data.dtype} cannot be converted to timedelta64[ns]
exception error timedelta, typeerror, conversion, datetime, gh-23539
Cannot convert input with unit '{unit}'
exception error timedelta, overflow, uint64, conversion, gh-60677
Passing in 'timedelta' dtype with no precision is not allowe
exception error timedelta, dtype, valueerror, gh-24806
dtype '{dtype}' is invalid, should be np.timedelta64 dtype
exception error timedelta, dtype, valueerror
Supported timedelta64 resolutions are 's', 'ms', 'us', 'ns'
exception error timedelta, dtype, valueerror, resolution
You cannot add any new attribute '{key}'
exception error attribute, frozen, attributeerror, immutability
Column(s) {self._selection} already selected
exception error selection, groupby, indexerror, chained
Columns not found: {str(bad_keys)[1:-1]}
exception error selection, groupby, keyerror, columns
Column not found: {key}
exception error selection, groupby, keyerror, columns
can only convert an array of size 1 to a Python scalar
exception error scalar, valueerror, item, size
to_numpy() got an unexpected keyword argument '{bad_keys}'
exception error to-numpy, typeerror, kwargs, dtype
Value must be 1-D array-like or scalar, {type(value).__name_
exception error searchsorted, dataframe, dimensionality, indexing
boolean value of an expression is ambiguous
exception error expression, pd-col, boolean, deferred, typeerror
Expression objects are not iterable
exception error expression, pd-col, iteration, deferred, typeerror
Expression objects are not copiable
exception error expression, pd-col, copy, deferred, typeerror
Expected Hashable, got: {type(col_name)}
exception error expression, pd-col, hashable, validation, typeerror
Column '{col_name}' not found in given DataFrame. Hint: did
exception error expression, pd-col, missing-column, deferred, valueerror
Cannot mask with non-boolean array containing NA / NaN value
exception error boolean-mask, na-nan, indexing, loc, valueerror
Indexing with a float is no longer supported. Manually conve
exception error indexing, float-key, cast, indexerror
unsupported type: {into}
exception error to-dict, mapping, into, validation, typeerror
to_dict() only accepts initialized defaultdicts
exception error to-dict, defaultdict, mapping, into, typeerror
random_state must be an integer, array-like, a BitGenerator,
exception error random-state, sampling, validation, rng, valueerror
{target} is both the pipe target and a keyword argument
exception error pipe, kwargs, argument-conflict, valueerror
Length of values ({len(data)}) does not match length of inde
exception error length-mismatch, assignment, index-alignment, valueerror
Variables in expression "{expr}" overlap with builtins: ({s}
exception error numexpr, eval, query, builtin-clash, name-collision
Invalid engine '{engine}' passed, valid engines are {valid_e
exception error eval, query, engine, validation, keyerror
'numexpr' is not installed or an unsupported version. Cannot
exception error numexpr, eval, query, dependency, importerror, environment
Invalid parser '{parser}' passed, valid parsers are {PARSERS
exception error eval, parser, validation, keyerror
Resolver of type '{name}' does not implement the __getitem__
exception error eval, resolver, getitem, mapping, typeerror
expr cannot be an empty string
exception error eval, query, empty-string, validation, valueerror
The '@' prefix is only supported by the pandas parser
exception error pandas, eval, query, parser, scope
The '@' prefix is not allowed in top-level eval calls. pleas
exception error pandas, eval, scope, stack-frame
expr must be a string to be evaluated, {type(expr)} given
exception error pandas, eval, type-validation, dataframe
multi-line expressions are only valid in the context of data
exception error pandas, eval, multi-line, target, assignment
Multi-line expressions are only valid if all expressions con
exception error pandas, eval, multi-line, assignment
Cannot operate inplace if there is no assignment
exception error pandas, eval, inplace, assignment
Cannot return a copy of the target
exception error pandas, eval, target, inplace, copy
Cannot assign expression output to target
exception error pandas, eval, target, assignment, setitem
'{node_name}' nodes are not implemented
exception error pandas, eval, ast, unsupported, grammar
only a single expression is allowed
exception error pandas, eval, parser, syntax, ast
unsupported operand type(s) for {res.op}: '{lhs.type}' and '
exception error pandas, eval, dtype, numexpr, type-mismatch
can only assign a single expression
exception error pandas, eval, assignment, syntax
left hand side of an assignment must be a single name
exception error pandas, eval, assignment, syntax, subscript
cannot assign without a target object
exception error pandas, eval, target, assignment
left hand side of an assignment must be a single resolvable
exception error pandas, eval, assignment, validation
Invalid Attribute context {type(ctx).__name__}
exception error pandas, eval, attribute, ast-context
Only named functions are supported
exception error pandas, eval, functions, lambda, call
Invalid function call {node.func.id}
exception error pandas, eval, functions, name-resolution
Function "{res.name}" does not support keyword arguments
exception error pandas, eval, functions, numexpr, kwargs
keyword error in function call '{node.func.id}'
exception error pandas, eval, functions, ast, internal, defensive
N-dimensional objects, where N > 2, are not supported with e
exception error pandas, eval, ndarray, dimensionality
Invalid binary operator {op!r}, valid operators are {keys}
exception error pandas, eval, operators, internal
cannot evaluate scalar only bool ops
exception error pandas, eval, boolean, scalar
Invalid unary operator {op!r}, valid operators are {UNARY_OP
exception error pandas, eval, operators, unary, internal
"{name}" is not a supported function
exception error pandas, eval, functions, math
Could not convert '{name}' to a valid Python identifier.
exception error pandas, query, parsing, identifiers, column-names
name {self.name!r} is not defined
exception error pandas, hdf5, pytables, where, column-names
arithmetic operations are not supported inside an HDFStore '
exception error pandas, hdf5, pytables, where, arithmetic
Cannot compare {conv_val} of type {type(conv_val)} to {kind}
exception error pandas, hdf5, pytables, type-mismatch, where
query term is not valid [{self}]
exception error pandas, hdf5, pytables, where, validation
passing a filterable condition to a non-table indexer [{self
exception error pandas, hdf5, pytables, where, data-columns
unable to collapse Joint Filters
exception error pandas, hdf5, pytables, where, filters
cannot use an invert condition when passing to numexpr
exception error pandas, hdf5, pytables, where, numexpr, inversion
UnaryOp only support invert type ops
exception error pandas, hdf5, pytables, where, unary
Unary addition not supported
exception error pandas, hdf5, pytables, where, unary
cannot subscript {value!r} with {slobj!r}
exception error pandas, hdf5, pytables, where, subscript
Invalid Attribute context {ctx.__name__}
exception error pandas, hdf5, pytables, where, attribute, ast
where must be passed as a string, PyTablesExpr, or list-like
exception error pandas, hdf5, pytables, where, type-validation
cannot process expression [{self.expr}], [{self}] is not a v
exception error pandas, hdf5, pytables, where, condition
cannot process expression [{self.expr}], [{self}] is not a v
exception error hdfstore, pytables, query, where-filter
name '{key}' is not defined
exception error query, eval, name-resolution, undefined-variable
local variable '{key}' is not defined
exception error query, eval, name-resolution, local-variable, undefined-variable
Value must be a positive integer or None
validation error config, options, threading, validation, read-csv
Value must be one of python|pyarrow
validation error config, options, string-dtype, pyarrow, validation