Check open ports with python

>>> import socket
>>> def isOpen(ip,port):
...    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
...    try:
...       s.connect((ip, int(port)))
...       s.shutdown(2)
...       return True
...    except:
...       return False
...
>>> isOpen('atotclic.es',443)
True
>>> isOpen('atotclic.es',444)
False