"""simple docstring"""




from __future__ import annotations

from collections.abc import Iterator
class 						__A							:






     def __init__(		self    ,					a__  ):
       _lowerCAmelCase						:	Optional[Any]        =					value
       _lowerCAmelCase						:	Node | None        =					None
       _lowerCAmelCase						:	Node | None        =					None







class 						__A							:






     def __init__(		self    ,					a__  ):
       _lowerCAmelCase						:	List[str]        =					tree






     def    __A  (		self    ,					a__  ):
       if node is None:
         return 0
       return node.value + (
           self.depth_first_search(node.left  ) + self.depth_first_search(node.right  )
       )






     def __iter__(		self  ):
       yield self.depth_first_search(self.tree  )


if __name__ == "__main__":
     import doctest

     doctest.testmod()





"""simple docstring"""




import socket





def 							SCREAMING_SNAKE_CASE					(      )	->				str:
  _lowerCAmelCase						:	Optional[int]        =					socket.socket(socket.AF_INET      ,socket.SOCK_STREAM     )
  _lowerCAmelCase						:	Optional[int]        =					socket.gethostname()
  _lowerCAmelCase						:	Tuple        =					12312

  sock.connect((host, port)     )
  sock.send(b"""Hello server!"""     )

  with open("""Received_file"""      ,"""wb"""     ) as out_file:
    print("""File opened"""     )
    print("""Receiving data..."""     )
    while True:
      _lowerCAmelCase						:	List[Any]        =					sock.recv(1024     )
      if not data:
        break
      out_file.write(_lowerCamelCase     )

  print("""Successfully received the file"""     )
  sock.close()
  print("""Connection closed"""     )


if __name__ == "__main__":
     main()




