我的包依赖于 BeautifulSoup。如果我通过 python setup.py develop 在新的 virtualenv 中安装我的包，我会收到以下错误。如果我第二次执行 python setup.py develop，一切似乎都正常。我不知道发生了什么。如何修复它以获得可重现的设置？

Best match: beautifulsoup4 4.3.2
Downloading https://pypi.python.org/packages/source/b/beautifulsoup4/beautifulsoup4-4.3.2.tar.gz#md5=b8d157a204d56512a4cc196e53e7d8ee
Processing beautifulsoup4-4.3.2.tar.gz
Writing /tmp/easy_install-1eBfi3/beautifulsoup4-4.3.2/setup.cfg
Running beautifulsoup4-4.3.2/setup.py -q bdist_egg --dist-dir /tmp/easy_install-1eBfi3/beautifulsoup4-4.3.2/egg-dist-tmp-YmoFSq
Traceback (most recent call last):
  File "setup.py", line 73, in <module>
    """,
  File "/usr/lib/python2.7/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/develop.py", line 27, in run
    self.install_for_development()
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/develop.py", line 129, in install_for_development
    self.process_distribution(None, self.dist, not self.no_deps)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 671, in process_distribution
    [requirement], self.local_index, self.easy_install
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/pkg_resources.py", line 564, in resolve
    dist = best[req.key] = env.best_match(req, self, installer)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/pkg_resources.py", line 802, in best_match
    return self.obtain(req, installer) # try and download/install
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/pkg_resources.py", line 814, in obtain
    return installer(requirement)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 593, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 623, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 809, in install_eggs
    return self.build_and_install(setup_script, setup_base)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 1015, in build_and_install
    self.run_setup(setup_script, setup_base, args)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 1000, in run_setup
    run_setup(setup_script, args)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/sandbox.py", line 50, in run_setup
    lambda: execfile(
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/sandbox.py", line 100, in run
    return func()
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/sandbox.py", line 52, in <lambda>
    {'__file__':setup_script, '__name__':'__main__'}
  File "setup.py", line 27, in <module>
    'raven',
  File "/usr/lib/python2.7/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.7/distutils/dist.py", line 970, in run_command
    cmd_obj = self.get_command_obj(command)
  File "/usr/lib/python2.7/distutils/dist.py", line 846, in get_command_obj
    cmd_obj = self.command_obj[command] = klass(self)
  File "/home/domma/VirtualEnvs/orcid/local/lib/python2.7/site-packages/setuptools/__init__.py", line 69, in __init__
    _Command.__init__(self,dist)
  File "/usr/lib/python2.7/distutils/cmd.py", line 59, in __init__
    raise TypeError, "dist must be a Distribution instance"
TypeError: dist must be a Distribution instance

最佳答案

此错误与您机器上安装的 distutils 和 setuptools 版本不一致有关。将 setuptools 升级到当前版本可能会解决该问题。

编辑:此解决方案不再适用于我(并且显然从未适用于 Jens——请参阅下面的评论)。现在对我有用的是导入 setuptools 在我调用的任何导致此错误的脚本中之前。

此错误在 GitHub 上的许多问题和许多软件包中都有讨论，但我发现 this discussion提供最多的信息。

关于python - 类型错误 : dist must be a Distribution instance，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21136266/