Question

我已经在Py2.7中创建了一个包，我试图让它与Py3兼容。问题是如果我在

中包含unicode_literals

__init__.py

导入构建返回此错误

error in daysgrounded setup command: package_data must be a dictionary mapping
package names to lists of wildcard patterns

我已经阅读了PEP，但我无法理解它与像

这样的词典有什么关系

__pkgdata__

任何人都可以帮忙吗？

__init__.py
#!/usr/bin/env python
# -*- coding: latin-1 -*-

"""Manage child(s) grounded days."""

from __future__ import (absolute_import, division, print_function,
                        unicode_literals)
# ToDo: correct why the above unicode_literals import prevents setup.py from working

import sys
from os import path
sys.path.insert(1, path.dirname(__file__))

__all__ = ['__title__', '__version__',
           '__desc__', '__license__', '__url__',
           '__author__', '__email__',
           '__copyright__',
           '__keywords__', '__classifiers__',
           #'__packages__',
           '__entrypoints__', '__pkgdata__']

__title__ = 'daysgrounded'
__version__ = '0.0.9'

__desc__ = __doc__.strip()
__license__ = 'GNU General Public License v2 or later (GPLv2+)'
__url__ = 'https://github.com/jcrmatos/DaysGrounded'

__author__ = 'Joao Matos'
__email__ = 'jcrmatos@gmail.com'

__copyright__ = 'Copyright 2014 Joao Matos'

__keywords__ = 'days grounded'
__classifiers__ = [# Use below to prevent any unwanted publishing
                   #'Private :: Do Not Upload'
                   'Development Status :: 4 - Beta',
                   'Environment :: Console',
                   'Environment :: Win32 (MS Windows)',
                   'Intended Audience :: End Users/Desktop',
                   'Intended Audience :: Developers',
                   'Natural Language :: English',
                   'Natural Language :: Portuguese',
                   'License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)',
                   'Operating System :: OS Independent',
                   'Programming Language :: Python',
                   'Programming Language :: Python :: 2.7',
                   'Programming Language :: Python :: 3.4',
                   'Topic :: Other/Nonlisted Topic']

#__packages__ = ['daysgrounded']

__entrypoints__ = {
    'console_scripts': ['daysgrounded = daysgrounded.__main__:main'],
    #'gui_scripts': ['app_gui = daysgrounded.daysgrounded:start']
    }

__pkgdata__ = {'daysgrounded': ['*.txt']}
#__pkgdata__= {'': ['*.txt'], 'daysgrounded': ['*.txt']}


setup.py
#!/usr/bin/env python
# -*- coding: latin-1 -*-

from __future__ import (absolute_import, division, print_function,
                        unicode_literals)

from setuptools import setup, find_packages
#import py2exe

#from daysgrounded import *
from daysgrounded import (__title__, __version__,
                          __desc__, __license__, __url__,
                          __author__, __email__,
                          __keywords__, __classifiers__,
                          #__packages__,
                          __entrypoints__, __pkgdata__)

setup(
    name=__title__,
    version=__version__,

    description=__desc__,
    long_description=open('README.txt').read(),
    #long_description=(read('README.txt') + '\n\n' +
    #                  read('CHANGES.txt') + '\n\n' +
    #                  read('AUTHORS.txt')),
    license=__license__,
    url=__url__,

    author=__author__,
    author_email=__email__,

    keywords=__keywords__,
    classifiers=__classifiers__,

    packages=find_packages(exclude=['tests*']),
    #packages=__packages__,

    entry_points=__entrypoints__,
    install_requires=open('requirements.txt').read(),
    #install_requires=open('requirements.txt').read().splitlines(),

    include_package_data=True,
    package_data=__pkgdata__,

    #console=['daysgrounded\\__main__.py']
)

谢谢，

JM

Answer 1

使用unicode_literals与使用u'...'对输入文件中的每个字符串文字相同，这意味着在__init__.py指定

__pkgdata__ = {'daysgrounded': ['*.txt']}

实际上与

相同

__pkgdata__ = {u'daysgrounded': [u'*.txt']}

对于python2，setuptools不会在unicode这里str，但它会失败。

因为看起来你在__init__.py中的字符串文字中不使用任何unicode字符，只是简单的ascii，所以你可以简单地删除unicode_literals导入。如果你真的在文件的某个地方使用unicode文字，而不是在帖子中显示，那么在那里使用显式的unicode文字。

Answer 2

这是setuptools中的一个错误。当isinstance(k, str)导入将字符串转换为2.x unicode类时，它会验证unicode_literals的值失败。应该修补它以使用isinstance(k, basestring)。

最简单的解决方案是将配置设置直接放入setup.py，而不是将其存储在__init__.py中。如果您需要以编程方式访问__version__，请将其放在setup.py和__init__.py包含的单独包中。

来自setuptools dist.py：

def check_package_data(dist, attr, value):
    """Verify that value is a dictionary of package names to glob lists"""
    if isinstance(value,dict):
        for k,v in value.items():
            if not isinstance(k,str): break
            try: iter(v)
            except TypeError:
                break
        else:
        return
    raise DistutilsSetupError(
        attr+" must be a dictionary mapping package names to lists of "
        "wildcard patterns"
   )

Answer 3

unicode_literals的用法是将Python 2与Python 3代码兼容，其中str现在是Python 2中的unicode-strings vs byte-strings。它非常适合防止字节混合字符串和unicode字符串，Py2上的长时间问题，但有一些pitfalls喜欢这个问题。

Kevin已经解释了这个错误，我会说setup.py它并不是严格要求的，修复它有点难看，特别是如果你有大量的条目{ {1}}。

如果要在setup.py中保留package_data，则只需将unicode_literals密钥编码为字节字符串：

dict

然而，在Python 3下，它将失败并显示相同的消息，因此需要涵盖两个版本：

__pkgdata__ = {b'daysgrounded': ['*.txt']}

或者使用future模块中的if sys.version_info.major == 2: __pkgdata__ = {b'daysgrounded': ['*.txt']} else: __pkgdata__ = {'daysgrounded': ['*.txt']}：

bytes_to_native_str

setup.py包和unicode_literals

3 个答案: