Python implementation of the tcp port detection operation example

This article example describes the tcp port detection operation implemented in Python. Shared for your reference, as follows:

# coding=utf-8
import sys
import socket
import re
def check_server(address, port):
  s = ()
  print 'Attempting to connect to %s on port %s' % (address, port)
  try:
    ((address, port))
    print 'Connected to %s on port %s' % (address, port)
    return True
  except  as e:
    print 'Connection to %s on port %s failed: %s' % (address, port, e)
    return False
if __name__ == '__main__':
  from argparse import ArgumentParser
  parser = ArgumentParser(description=u'TCP port detection')
  parser.add_argument(
    '-a',
    '--address',
    dest='address',
    default='localhost',
    help='address for the server')
  parser.add_argument(
    '-p',
    '--port',
    dest="port",
    default=80,
    type=int,
    help='port for the server')
  args = parser.parse_args()
  check = check_server(, )
  print 'check_server returned %s' % check
  (not check)

Test Results.

[hupeng@hupeng-vm Python]$python check_server.py && echo "SUCCESS"
Attempting to connect to localhost on port 80
Connected to localhost on port 80
check_server returned True
SUCCESS
[hupeng@hupeng-vm Python]$python check_server.py -p 81 && echo "Failure"
Attempting to connect to localhost on port 81
Connection to localhost on port 81 failed: [Errno 111] Connection refused
check_server returned False
[hupeng@hupeng-vm Python]$python check_server.py -p 81 || echo "Failure"
Attempting to connect to localhost on port 81
Connection to localhost on port 81 failed: [Errno 111] Connection refused
check_server returned False
Failure

Attachment.

in the shell&&cap (a poem)||Methods of use

Return result of the command: true (return 0), false (return non-zero)

command1  && command2: command2 is executed when command1 returns true.

command1  || command2:command2 will not be executed if command1 returns true

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I hope that what I have said in this article will help you in Python programming.