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How to open the path of a file in python?

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2020-06-10 17:22:1025651browse

How to open the path of a file in python?

python怎么打开文件的路径?

python打开文件路径的方法:

1.我们知道用绝对路径打开一个文件。f=open('c:/Users/Administrator/Desktop/2.txt','r')。

How to open the path of a file in python?

2.这里要注意路径中的斜杠,和我们从文件属性中复制出来的方向不一致。这真是一个非常不方便的地方。那我们有没有方法解决呢?当然是有的。

How to open the path of a file in python?

3.我们设置一个路径变量。运行时成功的。

fpath = r'C:\Users\Administrator\Desktop\1.txt'
with open(fpath, 'r') as f:
    s = f.read()
    print(s)

How to open the path of a file in python?

4.当然我们也可以不设置路径变量,而把路径放在open()方法里。运行也是成功的。

with open(r'C:\Users\Administrator\Desktop\1.txt', 'r') as f:
    s = f.read()
    print(s)

How to open the path of a file in python?

5.问题的关键在于路径前面的r,如果没有这个r,\就是转义符的作用,引起了路径错误。(unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

How to open the path of a file in python?

6.

with open('C:\\a.txt', 'r') as f:
    s = f.read()
    print(s)

如果路径只有一个斜杠,则会报错。Traceback (most recent call last):

  File "C:\Users\Administrator\Desktop\OneDrive\Python3.6.5\test.py", line 1, in

    with open('C:\a.txt', 'r') as f:

OSError: [Errno 22] Invalid argument: 'C:\x07.txt'

有两个\\时表示的是一个\,路径就是正常的。这也是为什么需要/作为默认参数的原因。

How to open the path of a file in python?

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