Function func

pandas/core/col.py:415–427

(df: DataFrame)

        raise TypeError(msg)

    def func(df: DataFrame) -> Series:
        if col_name not in df.columns:
            columns_str = str(df.columns.tolist())
            max_len = 90
            if len(columns_str) > max_len:
                columns_str = columns_str[:max_len] + "...]"

            msg = (
                f"Column '{col_name}' not found in given DataFrame.\n\n"
                f"Hint: did you mean one of {columns_str} instead?"
            )
            raise ValueError(msg)
        return df[col_name]

    return Expression(func, f"col({col_name!r})")