为什么我不能更改当前工作目录？

Question

I am trying to create my first python program that deletes any empty directories within d:\\source . It appears I can't even enter the directory with my current skills:

import os
os.getcwd()
os.chdir("D:\\SOURCE")
os.getcwd()

All I get is...

D:\CODING\venv\Scripts\python.exe D:/CODING/tester.py

Process finished with exit code 0

It seems it has not changed the working dir, how do I verify that? Why won't it display the results/errors for the os.chdir("D:\\\\SOURCE") or the second os.getcwd() command at all?

Answer 1

Chances are your program indeed changes the directory. But you cannot see this:

• A mere os.getcwd() won't do anything visible: it retrieves the current working directory and discards it. Instead, you should do print(os.getcwd())
• Changing the current working directory only affects the current process (ie, the Python program), but not its parent (the command prompt). So your command prompt keeps its cwd and doesn't inherit the one from the called program.

Answer 2

You need to print the result.

import os
print(os.getcwd())
os.chdir("D:\\SOURCE")
print(os.getcwd())

Answer 3

os.chdir() doesn't return any value . It will just change the directory. As suggested in other answers you can print/output the current directory using

os.chdir("D:\\SOURCE") 
print(os.getcwd())