microsoft/qlib · error · NotImplementedError

This type of input is not supported

Error message

This type of input is not supported

What it means

Error "This type of input is not supported" thrown in microsoft/qlib.

Source

Thrown at qlib/utils/time.py:127

        return False
    else:
        raise NotImplementedError(f"please implement the is_single_value func for {region}")


class Freq:
    NORM_FREQ_MONTH = "month"
    NORM_FREQ_WEEK = "week"
    NORM_FREQ_DAY = "day"
    NORM_FREQ_MINUTE = "min"  # using min instead of minute for align with Qlib's data filename
    SUPPORT_CAL_LIST = [NORM_FREQ_MINUTE, NORM_FREQ_DAY]  # FIXME: this list should from data

    def __init__(self, freq: Union[str, "Freq"]) -> None:
        if isinstance(freq, str):
            self.count, self.base = self.parse(freq)
        elif isinstance(freq, Freq):
            self.count, self.base = freq.count, freq.base
        else:
            raise NotImplementedError(f"This type of input is not supported")

    def __eq__(self, freq):
        freq = Freq(freq)
        return freq.count == self.count and freq.base == self.base

    def __str__(self):
        # trying to align to the filename of Qlib: day, 30min, 5min, 1min...
        return f"{self.count if self.count != 1 or self.base != 'day' else ''}{self.base}"

    def __repr__(self) -> str:
        return f"{self.__class__.__name__}({str(self)})"

    @staticmethod
    def parse(freq: str) -> Tuple[int, str]:
        """
        Parse freq into a unified format

        Parameters

View on GitHub (pinned to 79633dd950)

Solutions

1. Pass a supported input type (e.g. pd.Timestamp, str, or datetime) to the time utility.
2. Convert your input to pd.Timestamp before calling the function.

When it happens

Trigger: This error is raised at qlib/utils/time.py:127 when the guard condition fails: "This type of input is not supported". It triggers when the code path receives input or a state that violates the precondition checked at this point — e.g. an unimplemented abstract method being called, an unsupported argument type/value, or an invalid configuration. To avoid it, satisfy the documented precondition before this call: implement the required method in your subclass, or pass a supported value of the expected type as described by the message.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/qlib@79633dd950 (2026-08-15). Data as JSON: /api/errors/05ac13ba4d80f049. Report an issue: GitHub.