code: 
  
  
  
  
  
  def     a						(      _lowercase   :     str = "mytext.txt" ,						_lowercase   :     bool = False       )     ->None:
    import socket
  
    UpperCamelCase__         =	1_2_3_1_2  # Reserve a port for your service.
    UpperCamelCase__         =	socket.socket()  # Create a socket object
    UpperCamelCase__         =	socket.gethostname()  # Get local machine name
    sock.bind((host, port)       )  # Bind to the port
    sock.listen(5       )  # Now wait for client connection.
  
    print("""Server listening...."""       )
  
    while True:
      UpperCamelCase__  ,			UpperCamelCase__         =	sock.accept()  # Establish connection with client.
      print(F"""Got connection from {addr}"""       )
      UpperCamelCase__         =	conn.recv(1_0_2_4       )
      print(F"""Server received: {data = }"""       )
  
      with open(a_ ,						"""rb"""       ) as in_file:
        UpperCamelCase__         =	in_file.read(1_0_2_4       )
        while data:
          conn.send(a_       )
          print(F"""Sent {data!r}"""       )
          UpperCamelCase__         =	in_file.read(1_0_2_4       )
  
      print("""Done sending"""       )
      conn.close()
      if testing:  # Allow the test to complete
        break
  
    sock.shutdown(1       )
    sock.close()
  
  
  if __name__ == "__main__":
      send_file()
  
  
  
  
  
  
style_context: 
  
  
  
  
  
  __lowerCAmelCase     =			{
      "0": 1,
      "1": 1,
      "2": 2,
      "3": 6,
      "4": 24,
      "5": 120,
      "6": 720,
      "7": 5_040,
      "8": 40_320,
      "9": 362_880,
  }
  
  __lowerCAmelCase     =			{145: 145}
  
  __lowerCAmelCase     =			{
      145: 0,
      169: 3,
      36_301: 3,
      1_454: 3,
      871: 2,
      45_361: 2,
      872: 2,
  }
  
  def     a						(      _lowercase   :     int       )     ->int:
  		if n in CACHE_SUM_DIGIT_FACTORIALS:
  				return CACHE_SUM_DIGIT_FACTORIALS[n]
  		UpperCamelCase__         =	sum(DIGIT_FACTORIALS[let] for let in str(_lowercase       )       )
  		UpperCamelCase__         =	ret
  		return ret
  
  def     a						(      _lowercase   :     int ,						_lowercase   :     set | None = None       )     ->int:
  		UpperCamelCase__         =	previous or set()
  		if n in CHAIN_LENGTH_CACHE:
  				return CHAIN_LENGTH_CACHE[n]
  		UpperCamelCase__         =	sum_digit_factorials(_lowercase       )
  		if next_number in previous:
  				UpperCamelCase__         =	0
  				return 0
  		else:
  				previous.add(_lowercase       )
  				UpperCamelCase__         =	1 + chain_length(_lowercase ,						_lowercase       )
  				UpperCamelCase__         =	ret
  				return ret
  
  def     a						(      _lowercase   :     int = 6_0 ,						_lowercase   :     int = 1_0_0_0_0_0_0       )     ->int:
  		return sum(1 for i in range(1 ,						_lowercase       ) if chain_length(_lowercase       ) == num_terms       )
  
  
  if __name__ == "__main__":
  				print(f"""{solution() = }""")
  
  
  
  
  
  