


"""simple docstring"""


import socket







def  __snake_case       (   )      ->		Optional[int]:







		"""simple docstring"""





		A					       = socket.socket(socket.AF_INET ,			socket.SOCK_STREAM	)
		A					       = socket.gethostname()
		A					       = 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:
						A					       = sock.recv(1024	)
						if not data:
								break
						out_file.write(UpperCamelCase__	)

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


if __name__ == "__main__":
	main()









"""simple docstring"""


from math import factorial







def  __snake_case       (   UpperCamelCase__ ,			UpperCamelCase__ ,			UpperCamelCase__	)      ->		float:







		"""simple docstring"""





		if successes > trials:
				raise ValueError('successes must be lower or equal to trials'	)
		if trials < 0 or successes < 0:
				raise ValueError('the function is defined for non-negative integers'	)
		if not isinstance(UpperCamelCase__ ,			UpperCamelCase__	) or not isinstance(UpperCamelCase__ ,			UpperCamelCase__	):
				raise ValueError('the function is defined for non-negative integers'	)
		if not 0 < prob < 1:
				raise ValueError('prob has to be in range of 1 - 0'	)
		A					       = (prob**successes) * ((1 - prob) ** (trials - successes))
		# Calculate the binomial coefficient: n! / k!(n-k)!
		A					       = float(factorial(UpperCamelCase__	)	)
		coefficient /= factorial(UpperCamelCase__	) * factorial(trials - successes	)
		return probability * coefficient


if __name__ == "__main__":
	from doctest import testmod

	testmod()
	print("Probability of 2 successes out of 4 trails")
	print("with probability of 0.75 is:", end=" ")
	print(binomial_distribution(2, 4, 0.75))





