Python安裝包不會導入模塊

Question

我想創建一個名爲knife的python應用程序，可以從CLI執行，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setup.py看起來是這樣的：

#!/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knife.py看起來是這樣的：

#!/usr/bin/python 

import external 

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

if __name__ == "__main__": 
    main() 

所以後安裝與setup.py安裝模塊，我試圖運行刀，但不斷拋出這個錯誤：

$ 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 

究竟發生了什麼？我該如何解決它？

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'],