





import importlib
import shutil
import threading
import warnings
from typing import List

import fsspec
import fsspec.asyn

from . import compression
from .hffilesystem import HfFileSystem


UpperCAmelCase_  							=				importlib.util.find_spec('s3fs') is not None

if _has_safs:
  from .safilesystem import SaFileSystem  # noqa: F401

UpperCAmelCase_  							=				[
    compression.BzaFileSystem,
    compression.GzipFileSystem,
    compression.LzaFileSystem,
    compression.XzFileSystem,
    compression.ZstdFileSystem,
]

# Register custom filesystems
for fs_class in COMPRESSION_FILESYSTEMS + [HfFileSystem]:
  if fs_class.protocol in fsspec.registry and fsspec.registry[fs_class.protocol] is not fs_class:
    warnings.warn(F'''A filesystem protocol was already set for {fs_class.protocol} and will be overwritten.''')
  fsspec.register_implementation(fs_class.protocol, fs_class, clobber=True)




def 	lowerCAmelCase_					(						__UpperCAmelCase:    str   )   ->			str:
    if "://" in dataset_path:
        UpperCamelCase__							:       Optional[Any]      =   dataset_path.split('''://'''   )[1]
    return dataset_path




def 	lowerCAmelCase_					(						__UpperCAmelCase:    fsspec.AbstractFileSystem   )   ->			bool:
    if fs is not None and fs.protocol != "file":
        return True
    else:
        return False




def 	lowerCAmelCase_					(						__UpperCAmelCase:    fsspec.AbstractFileSystem	,     __UpperCAmelCase:    str	,     __UpperCAmelCase:    str   )   ->			Union[str, Any]:
    UpperCamelCase__							:       Any      =   not is_remote_filesystem(__UpperCAmelCase   )
    if is_local:
        # LocalFileSystem.mv does copy + rm, it is more efficient to simply move a local directory
        shutil.move(fs._strip_protocol(__UpperCAmelCase   )	,     fs._strip_protocol(__UpperCAmelCase   )   )
    else:
        fs.mv(__UpperCAmelCase	,     __UpperCAmelCase	,     recursive=__UpperCAmelCase   )





def 	lowerCAmelCase_					(						)   ->			None:
    if hasattr(fsspec.asyn	,     '''reset_lock'''   ):
        # for future fsspec>2022.05.0
        fsspec.asyn.reset_lock()
    else:
        UpperCamelCase__							:       List[Any]      =   None
        UpperCamelCase__							:       Tuple      =   None
        UpperCamelCase__							:       List[Any]      =   threading.Lock()








def 	lowerCAmelCase_					(						__UpperCAmelCase:    dict   )   ->			set:
    UpperCamelCase__							:       int      =   set()
    # edges = list of graph's edges
    UpperCamelCase__							:       str      =   get_edges(__UpperCAmelCase   )

    # While there are still elements in edges list, take an arbitrary edge
    # (from_node, to_node) and add his extremity to chosen_vertices and then
    # remove all arcs adjacent to the from_node and to_node
    while edges:
        UpperCamelCase__     ,UpperCamelCase__							:       List[Any]      =   edges.pop()
        chosen_vertices.add(__UpperCAmelCase   )
        chosen_vertices.add(__UpperCAmelCase   )
        for edge in edges.copy():
            if from_node in edge or to_node in edge:
                edges.discard(__UpperCAmelCase   )
    return chosen_vertices




def 	lowerCAmelCase_					(						__UpperCAmelCase:    dict   )   ->			set:
    UpperCamelCase__							:       Optional[int]      =   set()
    for from_node, to_nodes in graph.items():
        for to_node in to_nodes:
            edges.add((from_node, to_node)   )
    return edges


if __name__ == "__main__":
  import doctest

  doctest.testmod()

  # graph = {0: [1, 3], 1: [0, 3], 2: [0, 3, 4], 3: [0, 1, 2], 4: [2, 3]}
  # print(f"Matching vertex cover:\n{matching_min_vertex_cover(graph)}")

