This is a short tool I wrote that renames images files in a directory by creation date. There may be some bugs but hope you find it helpful.
#!/usr/bin/python #Inspired by Greg Hewgil's online tutorial on sorting files by creation time import getopt,sys #for file stuff import os import fnmatch #for sorting files by creation date import time #for printing stuff from pprint import pprint ##rename all files like name_### by creation time #@note skips if any files by formatted name exist in directory #@note by default looks in current directory #@note if call it twice over the creation times will be affected hence will loose the ordering ## def renameFileInDirectory(d = '.', ext = '*.png', name = 'out'): newNamePrefix = name #hold all the file names result =  if os.path.isdir(d): print 'Great Found Directory >> %s\n' %d files = os.listdir(d) #only file names not full path need glob for full path goodFiles = fnmatch.filter( files, ext ) #renaming happens here newName = [ newNamePrefix+'_'+str(x+1)+'.'+ext[2:] for x in range(0,len(goodFiles)) ] pathWithNewName = [ os.path.join(d,f) for f in newName] #make sure dont rename if any new names are taken already isAnyNewFileInDir = False isAnyNewFileInDir = any( x for x in pathWithNewName if os.path.isfile(x) ) if isAnyNewFileInDir: print 'Error! Cannot Rename Because A file By New Name Exists' sys.exit() pprint( newName ) #sorts files by creation time #first it makes a list of all file names and a stat thingie # #then it sorts them by the second thingies key st_ctime # #that is what this does #sorted([(fn, os.stat(fn)) for fn in goodFiles], key = lambda x: x.st_ctime) # #finally we organize what to print #z.st_ctime is like os.stat(path).st_ctime it gives secs back # #the time.ctime(z.st_ctime) makes a string like "Sun Jul 28 18:17:13 2013" from seconds arg = [(z, time.ctime(z.st_ctime)) for z in sorted([(fn, os.stat(fn)) for fn in goodFiles], key = lambda x: x.st_ctime)] pprint(arg) result = [ arg[x] for x in range(0,len(arg)) ] for f,name in zip(result,newName): os.rename(f,name) else: print 'Requires Directory >> %s' %d return result def usage(): print "usage: rename [-d|--directory]" print "-d,--directory
find files in " print "-e,--extension find files with wild card ex: <*.png>" print "-n,--name new name " def main(): try: opts, args = getopt.getopt(sys.argv[1:], "hden:", ["help","directory=","extension=","name="]) except getopt.GetoptError, err: #print help info and exit print str(err) usage() sys.exit(2) dir = '.' ext = '*.png' name = 'out' for o, a in opts: if o in ("-h","--help"): usage() sys.exit() elif o in ("-d","--directory"): dir = a elif o in ("-e","--extension"): ext = a elif o in ("-n","--name"): name = a allFile = renameFileInDirectory(dir,ext,name) print allFile if __name__ == '__main__': print 'current _name is: '+__name__ main()