打开文件的最pythonic方法是什么? [英] What is the most pythonic way to open a file?

问题描述

我试图稍微清理一下我的代码，但是我很难确定这两种方式中哪一种被认为是最pythonic的方式

I'm trying to clean up my code a little bit, and I have trouble figuring which of these 2 ways is considered the most pythonic one

import os

dir = os.path.dirname(__file__)
str1 = 'filename.txt'
f = open(os.path.join(dir,str1),'r')

尽管第二个似乎是最干净的，但是我发现fullPath的声明有点太多，因为它只会被使用一次.

Although the second seems to be cleanest one, I find the declaration of fullPath a bit too much, since it will only be used once.

import os

dir = os.path.dirname(__file__)
str1 = 'filename.txt'
fullPath = os.path.join(dir,str1)
f = open(fullPath,'r')

总的来说，即使添加了一行代码，还是避免在另一个调用中调用函数会更好吗?

In general, is it a better thing to avoid calling functions inside of another call, even if it adds a line of code ?

推荐答案

with open('file path', 'a') as f:
   data = f.read()
   #do something with data

或

f = open(os.path.join(dir,str1),'r')
f.close()

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