TypeError：dist必须是分发实例 [英] TypeError: dist must be a Distribution instance

问题描述

我的包裹取决于BeautifulSoup。如果我通过 python setup.py development 将软件包安装在新的virtualenv中，则会出现以下错误。如果我第二次执行 python setup.py development ，一切似乎都可以正常工作。我不知道发生了什么事。

My package depends on BeautifulSoup. If I install my package in a fresh virtualenv via python setup.py develop, I get the following error. If I execute python setup.py develop a second time, everything seems to work fine. I have no idea, what's happening. How to fix it to get a reproducable setup?

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

推荐答案

此错误与 distutils 和 setuptools 安装在您的计算机上。将 setuptools 升级到当前版本可能会解决此问题。

This error has to do with a discrepancy between the versions of distutils and setuptools installed on your machine. Upgrading setuptools to the current version is likely to resolve the issue.

编辑：该解决方案不再对我有效（显然对Jens无效，请参阅下面的评论）。现在对我有用的是先导入 setuptools 在我调用的任何脚本中导致此错误的其他任何内容。

EDIT: This solution no longer works for me (and apparently never worked for Jens -- see comment below). What now works for me is to import setuptools before anything else in whatever script I'm calling that leads to this error.

此错误已在GitHub上的许多问题中，许多软件包中进行了讨论，但是我发现此讨论是最有用的信息。

This error is discussed in many issues on GitHub, in many packages, but I find this discussion to be the most informative.

这篇关于TypeError：dist必须是分发实例的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！