HELP: compile error, cannot import python package re for regex

Question

this does not compile:

def isAlphanumeric(self, a):
    import re
    return re.match(r'^[a-zA-Z0-9]$', a) != None

yet this does:

def isAlphanumeric(self, a):
    return len(a) == 1 and a in 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'

seem we cannot import regex package, is it general that we cannot export any library?

Answer 1

Try remove the line of import, it seems that the collections are automatically imported. It worked for me! -K