class_docstr: A rule line is a single "Allow:" (allowance==True) or "Disallow:"
  (allowance==False) followed by a path.
code: def applies_to(self, filename):
      return self.path == "*" or filename.startswith(self.path)
  
imports: import collections
  import urllib.parse
  import urllib.request
label_desc: Use image node_id 2 for calling the RuleLine obj's underlying member method code with example usage: obj.applies_to(filename) and returns: unknown