从 Python 中的不同文件夹导入模块时出错

Question

I have the following:

my_project/
    hybrik/
        __init__.py
        models/
            __init__.py
            builder.py
    scripts/
        demo.py

And in demo.py:

from hybrik.models import builder

When I tried to run demo.py, an error occured:

ModuleNotFoundError: No module named 'hybrik'

I've already had __init__.py , why can't it find the module?

Answer 1

Python will look for modules in locations on the PYTHONPATH .

Assuming the actual code in those 4 Python files makes sense, you can do the following:

• on PowerShell:

$env:pythonpath += ";/path/to/my_project"

• on Windows command prompt:

set PYTHONPATH=%PYTHONPATH%;/path/to/my_project

• on a Linux shell:

PYTHONPATH=$PYTHONPATH:/path/to/my_project

Alternatively, you can build a package and install it in the environment of your script.