On 01.06.2012 11:07, somersetgraham wrote: > def build_dictionary (): > pretty_printers_dict[re.compile ('^QFile$')] = lambda > val:QFilePrinter(val) > pretty_printers_dict[re.compile ('^QFile *$')] = lambda > val:QFilePrinter(val) you may try something like the following to match both cases: pretty_printers_dict[re.compile('^QFile ( \*)?$')] = lambda val:QFilePrinter(val) The asterisk is a special character in regular expressions and has to be escaped to match an asterisk. Your regexp matches QFile with any count of spaces as postfix. - Joachim