标签:html tps strong bsp error nihao return import pre
转自---http://blog.csdn.net/yl2isoft/article/details/52079960
1.使用成员操作符 in
>>> s=‘nihao,shijie‘
>>> t=‘nihao‘
>>> result = t in s
>>> print result
True
2.使用string模块的find()/rfind()方法
>>> import string
>>> s=‘nihao,shijie‘
>>> t=‘nihao‘
>>> result = string.find(s,t)!=-1
>>> print result
True
>>> result = string.rfind(s,t)!=-1
>>> print result
True
3.使用string模块的index()/rindex()方法
index()/rindex()方法跟find()/rfind()方法一样,只不过找不到子字符串的时候会报一个ValueError异常。
import string
def find_string(s,t):
try:
string.index(s,t)
return True
except(ValueError):
return False
s=‘nihao,shijie‘
t=‘nihao‘
result = find_string(s,t)
print result #True
4.使用字符串对象的find()/rfind()、index()/rindex()和count()方法
>>> s=‘nihao,shijie‘
>>> t=‘nihao‘
>>> result = s.find(t)>=0
>>> print result
True
>>> result=s.count(t)>0
>>> print result
True
>>> result=s.index(t)>=0
>>> print result
True
参考链接:https://www.cnblogs.com/johnson-yuan/p/7910087.html
标签:html tps strong bsp error nihao return import pre
原文地址:https://www.cnblogs.com/xiohao/p/11241568.html