#!/usr/local/bin/python

import re

# this is an example showing a coroutine matching with regex

def regexmatcher (pattern):
    regex=re.compile(pattern)

    while True:
        line = (yield)                    # Coroutine: Wait here for input
        matches = regex.findall(line)     # Does matching here
        yield matches                     # Returns match, pauses here


# Construct and compile the pattern
datepattern=r"[0-9]{1,2}[/\.-][0-9]{1,2}[/\.-](?:19[0-9]{2}|200[0-9]|2010|2011)"
matcher = regexmatcher(datepattern)


matcher.next()                        # Get to the first (yield)
matches=matcher.send("10/10/2009")    # Send the string, get list of matches
if (not matches == None):             # No matches = None
    for match in matches:             # If matches, iterate through list
        print match

matcher.next()
matches=matcher.send("10/10/1984 9/1/2009")
for match in matches:
    print match

matcher.next()
matches=matcher.send("12/9/2011 Greg Kesden1/9/2010")
for match in matches:
    print match

# Just for fun...no matches here
matcher.next()
matches=matcher.send("Greg Philip Carrier Alex Richard")
for match in matches:
    print match