为什么 os.chdir() 在这种情况下不能更改目录？

Question

----input

print(os.getcwd(), '\n')
print(os.listdir(), '\n')

Gui_path = '/Gui'

os.chdir(Gui_path)

----output

C:\Users\vhass\Documents\Coding Projects\The vault

C:\Users\vhass\Documents\Coding Projects\The vault

['application.py', 'crypto.py', 'encrypting.py', 'genaccount.py', 'Gui', 'Home.py', 'icons', 'login.py', 'main.py', 'Pics', 'test.py', 'Usernamepass.py', ' pycache ']

Traceback (most recent call last): File "C:\Users\vhass\Documents\Coding Projects\The vault\login.py", line 19, in os.chdir(Gui_path) FileNotFoundError: [WinError 2] The system cannot find the file specified: '/Gui'

note **** The path in this project is not static and might be changed based on user preference, so I can not use the full path.

Answer 1

The issue is that you're providing a full path and not a relative one. os.chdir('/Gui') is trying to go to your root directory ( / ) and look for a folder Gui there.

I think what you're trying to do is look for the folder Gui relative to the current directory. Try something like

>>> import os
>>> os.getcwd()
'/Users/tyler/tmp/stackoverflow'
>>> os.listdir()
['a', 'f', 'Gui', 'c', 'd', 'e', 'b']
>>> os.chdir(os.getcwd() + '/Gui') # <- This is the important line
>>> os.getcwd()
'/Users/tyler/tmp/stackoverflow/Gui'
>>> os.listdir()
['HELLO']
>>>

See how we're doing a string join of os.getcwd() + '/Gui' rather than just '/Gui' ? That ensures we're looking within the directory that we're currenly in.

You should also take a look at the stdlib pathlib for other helpful primitives, and to ensure that your code handles weird file system edge cases.