什么是python re.match函数？（实例解析）

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# !/usr/bin/python

import re

line = "Cats are smarter than dogs"

matchObj = re.match(r'(.*) are (.*?) .*', line, re.M | re.I)

if matchObj:

    print "matchObj.group() : ", matchObj.group()

    print "matchObj.group(1) : ", matchObj.group(1)

    print "matchObj.group(2) : ", matchObj.group(2)

else:

    print "No match!!"

matchObj.group() :  Cats are smarter than dogs

matchObj.group(1) :  Cats

matchObj.group(2) :  smarter