我在下面记录了一个 setup.py,只有当您的用户的 pip < 1.2(例如在 Ubuntu 12.04 上)时才需要它。如果每个人都有 pip 1.2 或更高版本,那么您唯一需要的是packages=[..., 'twisted.plugins']
.
通过阻止 pip 将“ twisted
”行写入.egg-info/top_level.txt
,您可以继续使用packages=[..., 'twisted.plugins']
并拥有pip uninstall
不会删除所有twisted/
. 这涉及在您的setup.py
. 这是一个示例setup.py
:
from distutils.core import setup
# When pip installs anything from packages, py_modules, or ext_modules that
# includes a twistd plugin (which are installed to twisted/plugins/),
# setuptools/distribute writes a Package.egg-info/top_level.txt that includes
# "twisted". If you later uninstall Package with `pip uninstall Package`,
# pip <1.2 removes all of twisted/ instead of just Package's twistd plugins.
# See https://github.com/pypa/pip/issues/355 (now fixed)
#
# To work around this problem, we monkeypatch
# setuptools.command.egg_info.write_toplevel_names to not write the line
# "twisted". This fixes the behavior of `pip uninstall Package`. Note that
# even with this workaround, `pip uninstall Package` still correctly uninstalls
# Package's twistd plugins from twisted/plugins/, since pip also uses
# Package.egg-info/installed-files.txt to determine what to uninstall,
# and the paths to the plugin files are indeed listed in installed-files.txt.
try:
from setuptools.command import egg_info
egg_info.write_toplevel_names
except (ImportError, AttributeError):
pass
else:
def _top_level_package(name):
return name.split('.', 1)[0]
def _hacked_write_toplevel_names(cmd, basename, filename):
pkgs = dict.fromkeys(
[_top_level_package(k)
for k in cmd.distribution.iter_distribution_names()
if _top_level_package(k) != "twisted"
]
)
cmd.write_file("top-level names", filename, '\n'.join(pkgs) + '\n')
egg_info.write_toplevel_names = _hacked_write_toplevel_names
setup(
name='MyPackage',
version='1.0',
description="You can do anything with MyPackage, anything at all.",
url="http://example.com/",
author="John Doe",
author_email="jdoe@example.com",
packages=['mypackage', 'twisted.plugins'],
# You may want more options here, including install_requires=,
# package_data=, and classifiers=
)
# Make Twisted regenerate the dropin.cache, if possible. This is necessary
# because in a site-wide install, dropin.cache cannot be rewritten by
# normal users.
try:
from twisted.plugin import IPlugin, getPlugins
except ImportError:
pass
else:
list(getPlugins(IPlugin))
我已经用 , 和 对此进行pip install
了pip install --user
测试easy_install
。使用任何安装方法,上面的猴子补丁都pip uninstall
可以正常工作。
您可能想知道:我是否需要清除monkeypatch 以避免弄乱下一次安装?(例如pip install --no-deps MyPackage Twisted
;您不想影响 Twisted 的top_level.txt
。)答案是否定的;monkeypatch 不会影响另一个安装,因为每次安装都会pip
产生一个新的。python
相关:请记住,在您的项目中,您不能有一个文件 twisted/plugins/__init__.py
. 如果您在安装过程中看到此警告:
package init file 'twisted/plugins/__init__.py' not found (or not a regular file)
这是完全正常的,您不应尝试通过添加__init__.py
.