Function equal_dtypes

dask/dataframe/utils.py:336–345

(a, b)

    eq_types = {"i", "f", "u"} if numeric_equal else set()

    def equal_dtypes(a, b):
        if isinstance(a, pd.CategoricalDtype) != isinstance(b, pd.CategoricalDtype):
            return False
        if isinstance(a, str) and a == "-" or isinstance(b, str) and b == "-":
            return False
        if isinstance(a, pd.CategoricalDtype) and isinstance(b, pd.CategoricalDtype):
            if UNKNOWN_CATEGORIES in a.categories or UNKNOWN_CATEGORIES in b.categories:
                return True
            return a == b
        return (a.kind in eq_types and b.kind in eq_types) or is_dtype_equal(a, b)

    if not (
        is_dataframe_like(meta) or is_series_like(meta) or is_index_like(meta)