import re

class Frame(object):

def __init__(self, func_name, filename, lineno):

self.func_name = func_name

self.filename = filename

self.lineno = lineno

self.cached_str = None

self._skip = False

def match(self, other):

return ((other.func_name is None or other.func_name == self.func_name) and

(other.filename is None or other.filename == self.filename) and

(other.lineno is None or other.lineno == self.lineno))

def __eq__(self, other):

return (self.func_name == other.func_name and

self.filename == other.filename and

self.lineno == other.lineno)

def __str__(self):

if not self.cached_str:

if self.lineno is not None and self.lineno > 0:

self.cached_str = '{0} ({1}:{2})'.format(self.func_name, self.filename, self.lineno)

else:

self.cached_str = '{0} ({1})'.format(self.func_name, self.filename)

return self.cached_str