telnet: protocol handler. Actualy it's wrapper around SecureCrt.

gistfile1.py

import urlparse
import sys
from subprocess import Popen


urlparse.uses_params += ['telnet',]

class HelpException(Exception):
    pass


def help():
    print "telnet_handler.py [telnet://host:port/;param1=value1&param2=value2] [/register] [/deregister]"


def start_securecrt(host, params):
    params = [ '/%s=%s' % p for p in params ]
    params.insert(0, host)
    params = ' '.join(params)
    print params
    exe = "C:\\Program Files\\VanDyke Software\\Clients\\SecureCRT.exe"
    Popen( (exe, params) )


def main():
    print urlparse.uses_params
    if len(sys.argv)!=2:
        raise HelpException()
    if sys.argv[1]=='/register':
        register()
    elif sys.argv[1]=='/deregister':
        deregister()
    else:
        o = urlparse.urlparse(sys.argv[1])
        host = o.netloc
        params = o.params.strip('?')
        params = urlparse.parse_qsl(params)
        start_securecrt(host, params)

if __name__=="__main__":
    try:
        main()
    except HelpException:
        help()