apache_beam.typehints.native_type_compatibility module

Module to convert Python’s native typing types to Beam types.

apache_beam.typehints.native_type_compatibility.match_is_named_tuple(user_type)

apache_beam.typehints.native_type_compatibility.extract_optional_type(user_type)

Extracts the non-None type from Optional type user_type.

If user_type is not Optional, returns None

apache_beam.typehints.native_type_compatibility.match_is_set(user_type)

apache_beam.typehints.native_type_compatibility.is_any(typ)

apache_beam.typehints.native_type_compatibility.is_new_type(typ)

apache_beam.typehints.native_type_compatibility.is_forward_ref(typ)

apache_beam.typehints.native_type_compatibility.convert_builtin_to_typing(typ)

Convert recursively a given builtin to a typing object.

Parameters:

typ (builtins) – builtin object that exist in _BUILTINS_TO_TYPING.

Returns:

The given builtins converted to a type.

Return type:

type

apache_beam.typehints.native_type_compatibility.convert_collections_to_typing(typ)

Converts a given collections.abc type to a typing object.

Parameters:

typ – an object inheriting from a collections.abc object

Returns:

The corresponding typing object.

Return type:

type

apache_beam.typehints.native_type_compatibility.convert_to_beam_type(typ)

Convert a given typing type to a Beam type.

Parameters:

typ (typing.Union[type, str]) – typing type or string literal representing a type.

Returns:

The given type converted to a Beam type as far as we can do the conversion.

Return type:

type

Raises:

ValueError – The type was malformed.

apache_beam.typehints.native_type_compatibility.convert_to_beam_types(args)

Convert the given list or dictionary of args to Beam types.

Parameters:

• args – Either an iterable of types, or a dictionary where the values are

• types.

Returns:

If given an iterable, a list of converted types. If given a dictionary, a dictionary with the same keys, and values which have been converted.

apache_beam.typehints.native_type_compatibility.convert_to_typing_type(typ)

Converts a given Beam type to a typing type.

This is the reverse of convert_to_beam_type.

Parameters:

typ – If a typehints.TypeConstraint, the type to convert. Otherwise, typ will be unchanged.

Returns:

Converted version of typ, or unchanged.

Raises:

ValueError – The type was malformed or could not be converted.

apache_beam.typehints.native_type_compatibility.convert_to_typing_types(args)

Convert the given list or dictionary of args to typing types.

Parameters:

• args – Either an iterable of types, or a dictionary where the values are

• types.

Returns:

If given an iterable, a list of converted types. If given a dictionary, a dictionary with the same keys, and values which have been converted.