如何将文本文件读入单独的列表python [英] How to read a text file into separate lists python
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问题描述
说我有一个格式如下的文本文件:
Say I have a text file formatted like this:
100 20只鸟在飞翔
100 20 the birds are flying
,我想将int读入自己的列表中,并将字符串读入其自己的列表中……我将如何在python中进行处理.我尝试过
and I wanted to read the int(s) into their own lists and the string into its own list...how would I go about this in python. I tried
data.append(map(int, line.split()))
那没用...有什么帮助吗?
that didn't work...any help?
推荐答案
基本上,我正在逐行读取文件并将其拆分.我首先检查是否可以将它们转换为整数,如果失败,请将其视为字符串.
Essentially, I'm reading the file line by line, and splitting them. I first check to see if I can turn them into an integer, and if I fail, treat them as strings.
def separate(filename):
all_integers = []
all_strings = []
with open(filename) as myfile:
for line in myfile:
for item in line.split(' '):
try:
# Try converting the item to an integer
value = int(item, 10)
all_integers.append(value)
except ValueError:
# if it fails, it's a string.
all_strings.append(item)
return all_integers, all_strings
然后,给定文件('mytext.txt')
Then, given the file ('mytext.txt')
100 20 the birds are flying
200 3 banana
hello 4
...在命令行上执行以下操作会返回...
...doing the following on the command line returns...
>>> myints, mystrings = separate(r'myfile.txt')
>>> print myints
[100, 20, 200, 3, 4]
>>> print mystrings
['the', 'birds', 'are', 'flying', 'banana', 'hello']
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