Application pinger

ping_port.py

import socket

def ping(host, port):
    """A generator to ping a particular application.

    Return True if the destination port is occupied
    Example:
        >>> # ping application at port 99
        >>> pinger = ping('127.0.0.1', 99)
        >>> # When there's no application ruuning
        >>> next(pinger)
        False
        >>> # When there's an application running
        >>> next(pinger)
        True
        >>> # Or you can use it in a loop, just like a normal ping
        >>> while True:
        ...     print(next(pinger))
        ...
        True
        True
        True
    """
    while True:
        with socket.socket() as s:
            try:
                s.connect((host, port))
                yield True
            except:
                yield False