安裝的Python軟件包不會導入模塊

Question

我想創建一個名為“刀”的python應用程序，可以從CLI執行該程序，問題是它無法導入模塊。

我的文件結構是這樣的：

my_project/
    knife/
        __init__.py
        knife.py
        external.py
    setup.py

我的setup.py看起來像這樣：

#!/usr/bin/python

from setuptools import setup, find_packages

setup(name='Knife',
      version='0.3',
      description='Very cool project',
      author='John Doe',
      author_email='author@email.com',
      packages=find_packages(),
      py_modules=['knife.external'],
      scripts=['knife/knife.py'],
     )

我的knife.py看起來像這樣：

#!/usr/bin/python

import external

def main():
    print("Execute main function")

if __name__ == "__main__":
    main()

因此，在使用setup.py install安裝模塊后，我嘗試運行“ knife”，但仍然會拋出此錯誤：

$ knife.py 
Traceback (most recent call last):
  File "/usr/bin/knife.py", line 4, in <module>
    __import__('pkg_resources').run_script('Knife==0.3', 'knife.py')
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 723, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 1643, in run_script
    exec(script_code, namespace, namespace)
  File "/usr/lib/python2.7/site-packages/Knife-0.3-py2.7.egg/EGG-INFO/scripts/knife.py", line 3, in <module>
    __requires__ = 'Knife==0.3'
ImportError: No module named external

到底發生了什么事？ 以及我該如何解決？

Answer 1

external.py也應該發貨。 因此setup.py添加了external.py：

  scripts=['knife/knife.py', 'knife/external.py'],