A simple class to cache previously-compiled regular expressions.

reCache.py

#!/usr/bin/env python
# encoding: utf-8
import re

class reCache(object):
	def __init__(self):
		self.cache = {}
	
	def getPattern(self, pattern, flags=0):
		try:
			return self.cache[pattern, flags]
		except KeyError:
			self.cache[pattern, flags] = compiled = re.compile(pattern, flags)
			return compiled