python - 我需要对我的 python 代码做些什么才能让它成为一个模块？

Question

谁能告诉我将其打包为模块时做错了什么: https://github.com/xamox/python-zxing .

我的setup.py如下:

#!/usr/bin/env python

from distutils.core import setup

setup(
    name='zxing',
    version='0.1',
    description="wrapper for zebra crossing (zxing) barcode library",
    url='http://simplecv.org',
    author='Ingenuitas',
    author_email='public.relations@ingenuitas.com',
    packages=['zxing'],
)

我正在尝试“导入 zxing”。我安装了 setup.py，将其放入/usr/local/lib/python2.7/dist-packages/，但导入 zxing 不起作用。

我收到以下错误:

In [1]: import zxing.zxing
---------------------------------------------------------------------------
ResolutionError                           Traceback (most recent call last)
/home/xamox/<ipython-input-1-9ff7d0755c55> in <module>()
----> 1 import zxing.zxing

/usr/local/bin/zxing.py in <module>()
      3 __requires__ = 'zxing==0.1'
      4 import pkg_resources
----> 5 pkg_resources.run_script('zxing==0.1', 'zxing.py')

/usr/lib/python2.7/dist-packages/pkg_resources.pyc in run_script(self, requires, script_name)
    465         ns.clear()
    466         ns['__name__'] = name
--> 467         self.require(requires)[0].run_script(script_name, ns)
    468 
    469 

/usr/lib/python2.7/dist-packages/pkg_resources.pyc in run_script(self, script_name, namespace)
   1192         script = 'scripts/'+script_name
   1193         if not self.has_metadata(script):
-> 1194             raise ResolutionError("No script named %r" % script_name)
   1195         script_text = self.get_metadata(script).replace('\r\n','\n')
   1196         script_text = script_text.replace('\r','\n')

ResolutionError: No script named 'zxing.py'

Answer 1

当你做的时候

import zxing.zxing

一切正常(dir(zxing.zxing) = ['BarCode', 'BarCodeReader', ...])。可能你希望人们只需要使用

import zxing

如果那是你想要的，你必须把下面的代码放到zxing/__init__.py

from zxing import *

或者更好

from zxing import BarCode, BarcodeReader, ...