Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
369 views
in Technique[技术] by (71.8m points)

iteration - python: iterate a specific range in a list

Lets say I have a list:

listOfStuff =([a,b], [c,d], [e,f], [f,g])

What I want to do is to iterate through the middle 2 components in a way similar to the following code:

for item in listOfStuff(range(2,3))
   print item

The end result should be as below:

[c,d]
[e,f]

This code currently does not work, but I hope you can understand what I am trying to do.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
listOfStuff =([a,b], [c,d], [e,f], [f,g])

for item in listOfStuff[1:3]:
    print item

You have to iterate over a slice of your tuple. The 1 is the first element you need and 3 (actually 2+1) is the first element you don't need.

Elements in a list are numerated from 0:

listOfStuff =([a,b], [c,d], [e,f], [f,g])
               0      1      2      3

[1:3] takes elements 1 and 2.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...