old_contents: import re
  
  
  class RegexFactory(object):
      """Generates a compiled regular expression object."""
      NODE_GROUP = '({0}|\*)'
      SEP = '/'
  
      def _generate_pattern(self, path):
          """Generates a regex pattern.
  
          Parameters:
              path: string
  
          A pattern is generated by converting each node in the path into
          a regular expression group that will match either the node text
          verbatim, or the wildcard.  All the regular expression groups
          are then formatted into a single string that will potentially
          match a group of patterns that are delimited by new line
          characters.
          """
          # Explode the path up into a list using the forward slash as a
          # delimiter. Filter out any empty strings.
          nodes = (node for node in path.split(self.SEP) if node)
  
          # Compose a list of regular expression groups for each word in
          # the path.
          patterns = (self.NODE_GROUP.format(re.escape(node)) for node in nodes)
  
          # Implode the list into a single regex pattern that will match
          # the path pattern format.
          return '^{0}$'.format(('\,').join(patterns))
  
      @classmethod
      def create(cls, path):
          """Create a regular expression object from a path.
  
          Parameters:
              path: string
          """
          rf = cls()
          pattern = rf._generate_pattern(path)
          return re.compile(pattern, re.ASCII | re.MULTILINE)
  
new_contents: import re
  
  
  class RegexFactory(object):
      """Generates a compiled regular expression object."""
      NODE_GROUP = '({0}|\*)'
      SEP = '/'
  
      def _generate_pattern(self, path):
          """Generates a regex pattern.
  
          Parameters:
              path: string
  
          A pattern is generated by converting each node in the path into
          a regular expression group that will match either the node text
          verbatim, or the wildcard.  All the regular expression groups
          are then formatted into a single string that will potentially
          match a group of patterns that are delimited by new line
          characters.
          """
          # Explode the path up into a list using the forward slash as a
          # delimiter. Filter out any empty strings.
          nodes = (node for node in path.split(self.SEP) if node)
  
          # Compose a list of regular expression groups for each node in
          # the path.
          patterns = (self.NODE_GROUP.format(re.escape(node)) for node in nodes)
  
          # Implode the list into a single regex pattern that will match
          # the path pattern format.
          return '^{0}$'.format(('\,').join(patterns))
  
      @classmethod
      def create(cls, path):
          """Create a regular expression object from a path.
  
          Parameters:
              path: string
          """
          rf = cls()
          pattern = rf._generate_pattern(path)
          return re.compile(pattern, re.ASCII | re.MULTILINE)
  
subject: Fix comment wording.