为什么我无法导入自己的 os 模块？

Question

I am using Python 3.10.

1. I created a module os.py in a directory, my_dir .
2. I am trying to access my os.py using import os , from my_dir directory.
3. But it is loading Python's os module, not mine.
4. I inserted my_dir in sys.path as a first element, but still it's loading Python's os module.
5. I repeated the same with another standard library of Python 3, datetime . But it's working as expected. ie, it's loading my datetime.py , not Python's.

Why does only the os module have this problem? Is it a bug in Python 3?

Answer 1

if you want to import some module A that happens to have the name of some other module B, that its placement in the import hierarchy mean that module B is found first, then you need to use a relative import to clearly differentiate between the two from withing modules in the same package

for example, said you have

my_dir
    __init__.py
    os.py
    app.py

for app.py to use your os.py you do

from .os import X