Town Field Poem:
Cheng listens to the Tathagata language, the world name and benefit of Dayton. Be willing to do the Tibetan apostles, the broad show is by Sanfu mention.
I would like to do what I learned, to achieve a conscience blog. May all the Yimeimei, reproduce the wisdom of the body.
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Code
Mystr= ' Hellohello ' resoffindllo=mystr.find (' LLO ') #存在, returns the first occurrence of the index value of the first L, Resofindexllo=mystr.index (' LLO ') #存在, Returns the first occurrence of the index value of the first L, print (Resoffindllo) print (Resofindexllo) resfind=mystr.find (' X ') #找不到, returns -1print (Resfind) Resindex=mystr.index (' X ') #找不到, throw an exception
Result
============= restart:c:/users/administrator/desktop/mytest4.py =============22-1traceback (most recent): File "c:/users/administrator/desktop/mytest4.py", line one, in <module>
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The essence of the blog, in the technical part, more in the town yard a poem. Python version 3.5, System Windows7.
Python is a good language and deserves to be studied hard. I am following the small Turtle Video tutorial to learn, recommended.
I am a novice, so if the content of the blog can be improved, or even the wrong place, please leave a comment, I will try to correct, strive to achieve a conscience blog.
Note: This article is only as a scientific research study, if I inadvertently violated your rights and interests, please be sure to timely inform, I will make corrections.
Python3 base string find with index detection parameter string exists in the string, there is a range first index value