测试子串的字符串？ [重复]

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• Does Python have a string 'contains' substring method? 14 answers
• Python有一个字符串'contains'substring方法吗？ 14个答案

Is there an easy way to test a Python string "xxxxABCDyyyy" to see if "ABCD" is contained within it?

有没有一种简单的方法来测试Python字符串“xxxxABCDyyyy”以查看其中是否包含“ABCD”？

2 个解决方案

#1

if "ABCD" in "xxxxABCDyyyy":
    # whatever

#2

There are several other ways, besides using "in" operator(easiest)

除了使用“in”运算符（最简单）之外，还有其他几种方法

index()

指数（）

>>> try :
...   "xxxxABCDyyyy".index("test")
... except ValueError:
...   print "not found"
... else:
...   print "found"
...
not found

find()

找（）

>>> if "xxxxABCDyyyy".find("ABCD") != -1:
...   print "found"
...
found

re

回覆

>>> import re
>>> if re.search("ABCD" , "xxxxABCDyyyy"):
...  print "found"
...
found