On Mon, 02 Apr 2007 01:35:17 +0200, Georg Brandl wrote: > [EMAIL PROTECTED] schrieb: >> Hi, >> >> how can i compare a string which is non null and empty? >> >> >> i look thru the string methods here, but cant find one which does it? >> >> http://docs.python.org/lib/string-methods.html#string-methods >> >> In java,I do this: >> if (str != null) && (!str.equals("")) .... >> >> how can i do that in python? > > Strings cannot be "null" in Python. > > If you want to check if a string is not empty, use "if str".
I tried that, and I get something unexpected. >>> if str: ... print "What's going on here?" ... else: ... print "An empty string." ... What's going on here? > This also includes the case that "str" may not only be an empty > string, but also None. What about the case where str hasn't been shadowed and is a built-in type? >>> str <type 'str'> -- Steven D'Aprano -- http://mail.python.org/mailman/listinfo/python-list
