Python如何读取和分割一行到几个整数 [英] Python how to read and split a line to several integers

问题描述

  1 2 3 
 4 5 6 
 7 8 9 
  

如何读取行并拆分整数，然后保存到列表或元组？

pre $ data = [[1,2,3]，[4,5,6]，[7,8， 9]]
data = [（1,2,3），（4,5,6），（7,8,9）]







pre $ 用open（filename.txt，'r'）作为f：
data = [map（int，line.split（））for line in f]


请注意，与语句没有成为官方直到Python 2.6。如果您使用的是早期版本，则需要从__future__ import with_statement

  $ c> 




For input file separate by space/tab like:

1 2 3
4 5 6
7 8 9

How to read the line and split the integers, then save into either lists or tuples? Thanks.

data = [[1,2,3], [4,5,6], [7,8,9]]
data = [(1,2,3), (4,5,6), (7,8,9)]

解决方案

One way to do this, assuming the sublists are on separate lines:

with open("filename.txt", 'r') as f:
    data = [map(int, line.split()) for line in f]

Note that the with statement didn't become official until Python 2.6. If you are using an earlier version, you'll need to do

from __future__ import with_statement

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