CC wrote: > ... But am still a long way from seeing how I can use this OOP stuff. > ... I wrote: > from string import hexdigits > def ishex(word): > for d in word: > if d not in hexdigits: return(False) > else return(True) > Then I can do this to check if a string is safe to pass to the int() > function without raising an exception: > if ishex(string): > value = int(string, 16)
The Pythonic way to do this is simply: try: value = int(string, 16) except ValueError: <something else> > ... Can I create a class which inherits the attributes of the string > class, then add a method to it called ishex()? ... > The thing is, it doesn't appear that I can get my hands on the base > class definition/name for the string type to be able to .... class MyStr(str): def ishex(self): try: value = int(self, 16) except ValueError: return False return True # in fact, you could even say # class MyStr(type('123')): ... -- http://mail.python.org/mailman/listinfo/python-list