我在 Python 中遇到问题 - 从导入不起作用

Question

I am trying to import from a specific python file (which I wrote) class that in that file and it seems that python just does not recognize my file. add image to represent the situation more deeply: that the file I want to import the Ball class from:

the main file and the error:

mylib the files

Answer 1

To import from the same directory, put a dot at the front of the module name like:

from .shapes import Ball

But if you are running main_Pygame.py as the script then this will not work. You should create a subdirectory for shapes.py, say mylib and then make an empty file called __init__.py there and mve shapes.py to that directory. Then import like:

from mylib.shapes import Ball

The __init__.py file tells python that the mylib directory (or whatever else you wish to call the directory) is part of the directory tree it should look for modules under.