Code doesn't seem to write anything

[PickyBiker]

Okay, thank you to all. Here is the corrected code with a call to main. The problem was I inadvertently left out the call to main when I posted my code, but it was actually in my code. I also remove the self as suggested.  

Now, why doesn't this code put data into the status.json file, but it does send the code to the terminal via the print command??

import json
import os
import time
import datetime

# write the status file data
def main():
       string = {"stat":[]}
       count = 0
       while True:
               try:
                       string["stat"] = count
                       with open("status.json", 'w') as f:
                               json.dump(string, f)
                               print(string)
                               count += 1
                               if count > 99:
                                       count = 0
                               time.sleep(2)
               except IOError as e:
                       print "I/O error({0}): {1}".format(e.errno, e.strerror)
               except ValueError:
                       print ("Can't write file status.json")

if __name__=="__main__":
       main()