rohitg00/ai-engineering-from-scratch · error · ValueError

invalid value for {location}: not in enum

Error message

invalid value for {location}: not in enum

What it means

Error "invalid value for {location}: not in enum" thrown in rohitg00/ai-engineering-from-scratch.

Source

Thrown at certifications/claude/lessons/10-tool-use-and-agentic-loops/code/main.py:126

def _validate_schema_value(value: Any, schema: Any, location: str) -> None:
    if not isinstance(schema, dict):
        raise ValueError(f"schema for {location} must be an object")

    declared_type = schema.get("type")
    if declared_type is not None:
        declared_types = declared_type if isinstance(declared_type, list) else [declared_type]
        if not declared_types or not all(isinstance(item, str) for item in declared_types):
            raise ValueError(f"schema type for {location} must be a string or non-empty string list")
        if not any(_matches_json_type(value, item) for item in declared_types):
            expected = " or ".join(declared_types)
            raise ValueError(f"invalid type for {location}: expected {expected}")

    if "enum" in schema:
        choices = schema["enum"]
        if not isinstance(choices, list) or not choices:
            raise ValueError(f"schema enum for {location} must be a non-empty list")
        if value not in choices:
            raise ValueError(f"invalid value for {location}: not in enum")

    if isinstance(value, (int, float)) and not isinstance(value, bool):
        for keyword, comparison, message in (
            ("minimum", lambda current, bound: current >= bound, "below minimum"),
            ("maximum", lambda current, bound: current <= bound, "above maximum"),
            ("exclusiveMinimum", lambda current, bound: current > bound, "at or below exclusive minimum"),
            ("exclusiveMaximum", lambda current, bound: current < bound, "at or above exclusive maximum"),
        ):
            if keyword not in schema:
                continue
            bound = schema[keyword]
            if not isinstance(bound, (int, float)) or isinstance(bound, bool):
                raise ValueError(f"schema {keyword} for {location} must be numeric")
            if not comparison(value, bound):
                raise ValueError(f"invalid value for {location}: {message} {bound}")

    if isinstance(value, str):
        minimum = _integer_bound(schema, "minLength")

View on GitHub (pinned to 39ea8a1c6d)

When it happens

Trigger: Thrown at certifications/claude/lessons/10-tool-use-and-agentic-loops/code/main.py:126 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of rohitg00/ai-engineering-from-scratch@39ea8a1c6d (2026-08-26). Data as JSON: /api/errors/7b66ef5d55abf276. Report an issue: GitHub.