copying files and renaming them

copyandrename.py

import fnmatch
import os
import shutil
import re

for file in os.listdir('.'):
    flist = os.path.basename(file).split('.')
    fname = flist[0]    
    fext = '.blah'

    try:
        newname = str(int(fname)+1289)
        print fname + " is a tweet!"
        shutil.move(fname+fext, newname+fext)
        print "copied to "+newname+fext
    except Exception:
        print fname + " is not a tweet."