SpreadTooThin wrote: > Hi I'm writing a python script that creates directories from user > input. > Sometimes the user inputs characters that aren't valid characters for a > file or directory name. > Here are the characters that I consider to be valid characters... > > valid = > ':./,^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ' > > if I have a string called fname I want to go through each character in > the filename and if it is not a valid character, then I want to replace > it with a space. > > This is what I have: > > def fixfilename(fname): > valid = > ':.\,^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ' > for i in range(len(fname)): > if valid.find(fname[i]) < 0: > fname[i] = ' ' > return fname > > Anyone think of a simpler solution?
If you want to strip 'em: >>> valid=':./,^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ' >>> filename = '!"£!£$"$££$%$£%$£lasfjalsfjdlasfjasfd()()()somethingelse.dat' >>> stripped = ''.join(c for c in filename if c in valid) >>> stripped 'lasfjalsfjdlasfjasfdsomethingelse.dat' If you want to replace them with something, be careful of the regex string being built (ie a space character). import re >>> re.sub(r'[^%s]' % valid,' ',filename) ' lasfjalsfjdlasfjasfd somethingelse.dat' Jon. -- http://mail.python.org/mailman/listinfo/python-list
