Small file to auto-create php comments spaceholder

I'm so lazy. Wrote a script to help me comment my commentless php code.

#!/usr/bin/env python

import sys
import re

def main():
    try:
        print "Trying to open %s" % (sys.argv[1])
        fin=open(sys.argv[1],'r')
        fout=open(sys.argv[1]+'.out','w')
    except:
        print 'Unable to open file'
        quit()
    varcond=re.compile('(\$(?!this)\w+)')
    classvarcond=re.compile('var\s')
    funccond=re.compile('function\s(\w+)')
    for line in fin:
        if classvarcond.search(line):
            variables=varcond.findall(line)
            outtext = "/**\n * Define %s\n *\n */\n" % (variables[0])
            fout.write(outtext)
        if funccond.search(line):
            funcname=funccond.findall(line)
            variables=varcond.findall(line)
            print funcname," function is found"
            outtext = "/**\n * Describe %s\n *\n" % (funcname[0])
            for variable in variables:
                outtext += " * @param %s\n" % (variable)
            outtext += " * @return null\n */\n"

            fout.write(outtext)
        fout.write(line)

if __name__=="__main__":
    if len(sys.argv)>1:
        main()
    else:
        print 'Please provide filename'

Just put it here to share in case anyone find it useful. And also as a backup.. :P