


import itertools
import os
import re


SCREAMING_SNAKE_CASE :   List[Any]							      =				re.compile(r"([A-Z]+)([A-Z][a-z])")
SCREAMING_SNAKE_CASE :   str							      =				re.compile(r"([a-z\d])([A-Z])")

SCREAMING_SNAKE_CASE :   List[str]							      =				re.compile(r"(?<!_)_(?!_)")
SCREAMING_SNAKE_CASE :   Optional[Any]							      =				re.compile(r"(_{2,})")

SCREAMING_SNAKE_CASE :   str							      =				R"^\w+(\.\w+)*$"

SCREAMING_SNAKE_CASE :   Union[str, Any]							      =				R"<>:/\|?*"





def        UpperCamelCase_(   lowerCamelCase_				)					->		Any:
    _lowercase :							Tuple   	=	_uppercase_uppercase_re.sub(R'\1_\2'							,				UpperCamelCase__				)
    _lowercase :							List[Any]   	=	_lowercase_uppercase_re.sub(R'\1_\2'							,				UpperCamelCase__				)
    return name.lower()





def        UpperCamelCase_(   lowerCamelCase_				)					->		Optional[Any]:
    _lowercase :							Dict   	=	_single_underscore_re.split(UpperCamelCase__				)
    _lowercase :							Any   	=	[_multiple_underscores_re.split(UpperCamelCase__				) for n in name]
    return "".join(n.capitalize() for n in itertools.chain.from_iterable(UpperCamelCase__				) if n != ''				)





def        UpperCamelCase_(   lowerCamelCase_				)					->		List[str]:





    if os.path.basename(UpperCamelCase__				) != name:
        raise ValueError(F'''Should be a dataset name, not a path: {name}'''				)
    return camelcase_to_snakecase(UpperCamelCase__				)





def        UpperCamelCase_(   lowerCamelCase_							,				lowerCamelCase_				)					->		Optional[int]:





    if os.path.basename(UpperCamelCase__				) != name:
        raise ValueError(F'''Should be a dataset name, not a path: {name}'''				)
    if not re.match(_split_re							,				UpperCamelCase__				):
        raise ValueError(F'''Split name should match \'{_split_re}\'\' but got \'{split}\'.'''				)
    return F'''{filename_prefix_for_name(UpperCamelCase__				)}-{split}'''





def        UpperCamelCase_(   lowerCamelCase_							,				lowerCamelCase_							,				lowerCamelCase_							,				lowerCamelCase_=None				)					->		Optional[Any]:
    _lowercase :							Dict   	=	filename_prefix_for_split(UpperCamelCase__							,				UpperCamelCase__				)
    if filetype_suffix:
        prefix += F'''.{filetype_suffix}'''
    _lowercase :							Any   	=	os.path.join(UpperCamelCase__							,				UpperCamelCase__				)
    return F'''{filepath}*'''





def        UpperCamelCase_(   lowerCamelCase_							,				lowerCamelCase_							,				lowerCamelCase_							,				lowerCamelCase_=None							,				lowerCamelCase_=None				)					->		List[Any]:
    _lowercase :							Union[str, Any]   	=	filename_prefix_for_split(UpperCamelCase__							,				UpperCamelCase__				)
    _lowercase :							Union[str, Any]   	=	os.path.join(UpperCamelCase__							,				UpperCamelCase__				)

    if shard_lengths:
        _lowercase :							Any   	=	len(UpperCamelCase__				)
        _lowercase :							int   	=	[F'''{prefix}-{shard_id:05d}-of-{num_shards:05d}''' for shard_id in range(UpperCamelCase__				)]
        if filetype_suffix:
            _lowercase :							List[Any]   	=	[filename + F'''.{filetype_suffix}''' for filename in filenames]
        return filenames
    else:
        _lowercase :							Tuple   	=	prefix
        if filetype_suffix:
            filename += F'''.{filetype_suffix}'''
        return [filename]






def        UpperCamelCase_(   lowerCamelCase_				)					->		int:
    assert (
        isinstance(lowerCamelCase_							,				lowerCamelCase_				) and number_of_steps > 0
    ), F'''number_of_steps needs to be positive integer, your input {number_of_steps}'''
    if number_of_steps == 1:
        return 1
    _lowercase	,       _lowercase :							Dict   	=	1, 1
    for _ in range(number_of_steps - 1				):
        _lowercase	,       _lowercase :							Tuple   	=	current + previous, current
    return current


if __name__ == "__main__":
 import doctest

 doctest.testmod()


