python正则表达式match和search用法实例

import re
def testsearchandmatch():
 s1="helloworld, i am 30 !"
 w1 = "world"
 m1 = re.search(w1, s1)
 if m1:
  print("find : %s" % m1.group())
 if re.match(w1, s1) == none:
  print("cannot match")
 w2 = "helloworld"
 m2 = re.match(w2, s1)
 if m2:
  print("match : %s" % m2.group())
testsearchandmatch()
#find : world
#cannot match
#match : helloworld

希望本文所述对大家的Python程序设计有所帮助。