Rename the batch python script

Will Copy of * * * * * * * *. BMP or Copy of Copy of * * * * * * * *. BMP such unified file named * * * * * * * * 0. BMP or * * * * * * * * 00 in BMP format, such as the back of the number of 0 is for * * * * * * * *. BMP the number of occurrences of + 1. Wrote the following little script:

 
import os 
""" 
 This program is used to rename file names, because there are many in the folder Copy of  Duplicate file name, so remove windows 
 Rename the style and use the new cumulative naming mechanism instead  
 The author: chenxofHit@gmail.com 
 Time: 2011 years 4 month 13 day  
""" 
def getFileNames(dirs, dict): 
#dir Is the directory name, lst The list of  
filenames=os.listdir(dirs) 
for name in filenames: 
key = filenames[filenames.index(name)] 
sign = "Copy Of " 
judge = key.find(sign) 
if (judge != -1 ): 
dict[key] = 1 
else: # Extract the real file name  
trueKey= key[-12:] # Because the real file names are in 12 position  
if trueKey not in dict: # It doesn't exist in the dictionary  
dict[trueKey]=1 
os.rename(dirs+str(os.sep)+name,dirs+str(os.sep)+trueKey) 
else: 
#split finames 
newKey= str(trueKey[:-4])+str('0'*dict[trueKey])+ str(trueKey[-3:]) 
dict[trueKey] = dict[trueKey]+1 
os.rename(dirs+os.sep+name,dirs+os.sep+newKey) 

if '__name__=__main__': 
dict={} 
dirs = "C://temp" 
getFileNames(dirs, dict) 

Used the dictionary, used the OS module, learned some things, ha ha!