text: # Description: The re.escape() and re.purge() Functions
  
  import re
  
  """
  Note
  1. The syntax: re.escape(string).
  2. The re.escape function returns string with all non-alphanumerics backslashed.
  3. This is useful for matching an arbitrary literal string that may have regular expression metacharacters in it.
  """
  string = '^a.*$'
  escapedString = re.escape(string)
  print escapedString
  
  """
  Note
  1. The syntax: re.purge().
  2. The re.purge() clears the regular expression cache.
  """
  # Call this method when the compiled or cached regex should be discarded
  re.purge()
  