import re


class RegexFactory(object):
    """Generates a regex pattern."""
    WORD_GROUP = '({0}|\*)'
    SEP = '/'

    def _generate_pattern(self, path):
        """Generates a regex pattern."""
        # Split the path up into a list using the forward slash as a
        # delimiter.
        words = (word for word in path.split(self.SEP) if word)

        # Compose a list of regular expression groups for each word in
        # the path.
        patterns = (self.WORD_GROUP.format(re.escape(word)) for word in words)

        # Implode the list into a single regex pattern that will match
        # the path pattern format.
        return '^{0}$'.format(('\,').join(patterns))

    def create(self, path):
        pattern = self._generate_pattern(path)
        return re.compile(pattern, re.ASCII | re.MULTILINE)

import re


class RegexFactory(object):
    """Generates a regex pattern."""
    WORD_GROUP = '({0}|\*)'
    SEP = '/'

    def _generate_pattern(self, path):
        """Generates a regex pattern."""
        # Split the path up into a list using the forward slash as a
        # delimiter.
        words = (word for word in path.split(self.SEP) if word)

        # Compose a list of regular expression groups for each word in
        # the path.
        patterns = (self.WORD_GROUP.format(re.escape(word)) for word in words)

        # 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):
        rf = cls()
        pattern = rf._generate_pattern(path)
        return re.compile(pattern, re.ASCII | re.MULTILINE)

Make create a class method.
Make create a class method.

  import re
  
  
  class RegexFactory(object):
      """Generates a regex pattern."""
      WORD_GROUP = '({0}|\*)'
      SEP = '/'
  
      def _generate_pattern(self, path):
          """Generates a regex pattern."""
          # Split the path up into a list using the forward slash as a
          # delimiter.
          words = (word for word in path.split(self.SEP) if word)
  
          # Compose a list of regular expression groups for each word in
          # the path.
          patterns = (self.WORD_GROUP.format(re.escape(word)) for word in words)
  
          # Implode the list into a single regex pattern that will match
          # the path pattern format.
          return '^{0}$'.format(('\,').join(patterns))
  
+     @classmethod
-     def create(self, path):
+     def create(cls, path):
+         rf = cls()
-         pattern = self._generate_pattern(path)
+         pattern = rf._generate_pattern(path)
          return re.compile(pattern, re.ASCII | re.MULTILINE)
  
Make create a class method.
## Code Before:
import re


class RegexFactory(object):
    """Generates a regex pattern."""
    WORD_GROUP = '({0}|\*)'
    SEP = '/'

    def _generate_pattern(self, path):
        """Generates a regex pattern."""
        # Split the path up into a list using the forward slash as a
        # delimiter.
        words = (word for word in path.split(self.SEP) if word)

        # Compose a list of regular expression groups for each word in
        # the path.
        patterns = (self.WORD_GROUP.format(re.escape(word)) for word in words)

        # Implode the list into a single regex pattern that will match
        # the path pattern format.
        return '^{0}$'.format(('\,').join(patterns))

    def create(self, path):
        pattern = self._generate_pattern(path)
        return re.compile(pattern, re.ASCII | re.MULTILINE)

## Instruction:
Make create a class method.
## Code After:
import re


class RegexFactory(object):
    """Generates a regex pattern."""
    WORD_GROUP = '({0}|\*)'
    SEP = '/'

    def _generate_pattern(self, path):
        """Generates a regex pattern."""
        # Split the path up into a list using the forward slash as a
        # delimiter.
        words = (word for word in path.split(self.SEP) if word)

        # Compose a list of regular expression groups for each word in
        # the path.
        patterns = (self.WORD_GROUP.format(re.escape(word)) for word in words)

        # 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):
        rf = cls()
        pattern = rf._generate_pattern(path)
        return re.compile(pattern, re.ASCII | re.MULTILINE)
