chroma-core/chroma · error · ValueError

Unknown operator: {op}

Error message

Unknown operator: {op}

What it means

Error "Unknown operator: {op}" thrown in chroma-core/chroma.

Source

Thrown at chromadb/execution/expression/operator.py:212

                    if not isinstance(value, (str, int, float, bool)):
                        raise TypeError(
                            f"$not_contains requires a str, int, float, or bool, got {type(value).__name__}"
                        )
                    return Key(field).not_contains(value)
                elif op == "$regex":
                    if not isinstance(value, str):
                        raise TypeError(
                            f"$regex requires a string pattern, got {type(value).__name__}"
                        )
                    return Key(field).regex(value)
                elif op == "$not_regex":
                    if not isinstance(value, str):
                        raise TypeError(
                            f"$not_regex requires a string pattern, got {type(value).__name__}"
                        )
                    return Key(field).not_regex(value)
                else:
                    raise ValueError(f"Unknown operator: {op}")
            else:
                # Direct value is shorthand for equality
                return Key(field) == condition

    def __and__(self, other: "Where") -> "And":
        """Overload & operator for AND"""
        # If self is already an And, extend it
        if isinstance(self, And):
            # If other is also And, combine all conditions
            if isinstance(other, And):
                return And(self.conditions + other.conditions)
            return And(self.conditions + [other])
        # If other is And, prepend self to it
        elif isinstance(other, And):
            return And([self] + other.conditions)
        # Create new And with both conditions
        return And([self, other])

View on GitHub (pinned to aecdd12c8a)

When it happens

Trigger: Thrown at chromadb/execution/expression/operator.py:212 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of chroma-core/chroma@aecdd12c8a (2026-08-16). Data as JSON: /api/errors/3295d15b66908747. Report an issue: GitHub.