Client Get Video File From Server USing Python

import socket
import io
import cv2
import numpy

def Main():
host = socket.gethostname()
port = 5000
s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect((host,port))

filename = input("Filename?-> ")
if filename != 'q':
s.send(filename.encode())
data = s.recv(1024).decode()
if data[:6] == 'EXISTS':
filesize = (data[7:])
message = input("File Exists, "+str(filesize)+"Bytes, download? (Y/N)? -> ")
if message == 'Y':
s.send('OK'.encode())
fd = open('new_'+filename,'wb')
data = s.recv(1024)
totalRecv = len(data)
print('The totalRecv has a value: '+str(totalRecv))
print('The type of totalRecv is: '+str(type(totalRecv)))
print('The filesize has a value: '+filesize)
print('The type of filesize is :'+str(type(filesize)))
print('The type of data is:  '+str(type(data)))
fd.write(data)
size = int(filesize)
print('The value of size is :'+str(size))
print('The type of size is now converted to :'+str(type(size)))
while (totalRecv < size):
data = s.recv(1024)
totalRecv+=len(data)
fd.write(data)
print('Download Complete!')
print('The downloaded video file is going to play.. please wait...')
downloadedFile = 'new_'+filename
print('The downloaded video file name is:  '+downloadedFile)
video_capture = cv2.VideoCapture(downloadedFile)
while(video_capture.isOpened()):
ret_value,frame = video_capture.read()
cv2.imshow('downloadedFile',frame)
cv2.waitKey(1)
video_capture.release()
cv2.destrolAllWindows()
else:
print('File does not exist!')
s.close()
if __name__ == '__main__':
Main()