Terry Carroll wrote: > Is there a straightforward way to find out if all characters in one string > are present in a second string? > > Basically, I have a string s, and I want to print it out only if every > character in it is printable (because I accidentally brought my PC loudly > to its knees printing a few thousand BEL characters when trying to debug > something). A workable test for me is whether every character in the > string to be printed is in string.printable. > > Right now I'm doing: > > def printable(s): > import string > return [x for x in s if x not in string.printable] == []
My first thought is to use sets (not tested): _printable = set(string.printable) def printable(s): return set(s).issubset(printable) Using string.translate() might be very fast. Something like all_chars = ''.join(chr(i) for i in range(255)) def printable(s): return not s.translate(all_chars, string.printable) Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
