python3 bdist_egg无法安装在python2中吗？

Question

My setup.py is like this:

#!/usr/bin/env python
# encoding: utf-8

from setuptools import setup

setup(name='demo',
      version='0.0.1',
      packages=["demo"],
      package_dir={'demo':'demo'},
      install_requires=["requests"],
)

then I dist it:

source activate py3
python setup.py bdist_eg

I run it in python 3.6 , setuptools==36.2.7 , get egg file like this: dist/demo-0.0.1-py3.6.egg . I install this egg file without any errors in python3.

But if I want to install this egg file in python 2.7 , I run this:

source activate py2
easy_install dist/demo-0.0.1-py3.6.egg

I got error like this:

error: Could not find suitable distribution for Requirement.parse('demo==0.0.1')

Answer 1

The best practices nowadays is to use the wheel format (instead of egg) and install with pip.

In your virtualenv:

pip install wheel
python setup.py bdist_wheel

In your dist directory you'll a .whl file.

Then in py2 virtualenv you can do:

pip install your-lib-xyz.whl