问题
I'd like to make a wheel binary distribution, intstall it and then import it in python. My steps are
- I first create the wheel:
python ./my_package/setup.py bdist_wheel - I install the wheel:
pip install ./dist/*.whl - I try to import the package:
python -c"import my_package"
This leads to the error:
ImportError: No module named 'my_package'
Also, when I do pip list, the my_package is listed.
However, when I run which my_packge, nothing is shown.
When I run pip install ./my_package/ everything works as expected.
How would I correctly build and install a wheel?
python version 3.5 pip version 10.1 wheel version 0.31.1
UPDATE:
When I look at the files inside my_package-1.0.0.dist-info, there is an unexpected entry in top_level.txt. It is the name of the folder where I ran
python ./my_package/setup.py bdist_wheel in. I believe my setup.py is broken.
UPDATE WITH REGARDS TO ACCEPTED ANSWER:
I accepted the answer below. Yet, I think it is better to simply cd into the package directory. Changing to a different directory as suggested below leads to unexpected behavior when using the -d flag, i.e. the target directory where to save the wheel. This would be relative to the directory specified in the setup.py file.
回答1:
If you need to execute the setup script from another directory, ensure you are entering the project dir in the script.
from setuptools import setup
root = os.path.normpath(os.path.join(os.path.abspath(__file__), os.pardir))
os.chdir(root)
# or using pathlib (Python>=3.4):
import patlib
root = pathlib.Path(__file__).parent
os.chdir(str(root))
setup(...)
回答2:
I had the very same error, but it was due to my setup.py not specifying the entry "packages=setuptools.find_packages()". Everythings builds nicely without that but you can't import anything even though pip shows it to be installed.
回答3:
In my case, in order to solve it I just had to upgrade pip (since Docker installed pip 9).
python3 -m pip install --upgrade pip
来源：https://stackoverflow.com/questions/54145873/python-install-wheel-leads-to-import-error