import glob, os

def rename(dir, pattern, titlePattern):
    for pathAndFilename in glob.iglob(os.path.join(dir, pattern)):
        title, ext = os.path.splitext(os.path.basename(pathAndFilename))
        os.rename(pathAndFilename,
                  os.path.join(dir, titlePattern % title + ext))

accounts = open("Desktop/accounts.txt", "r")

for account in accounts.readfiles():
    rename("Desktop/19/.", titlePattern  )