使用pip安装Python包时显示为UNKNOWN

Question

我尝试安装一些软件包，比如pycadf，但出现了下面的错误：

Searching for pycadf>=0.4.1
Reading https://pypi.python.org/simple/pycadf/
Best match: pycadf 0.5.1
Downloading https://pypi.python.org/packages/source/p/pycadf/pycadf-0.5.1.tar.gz#md5=0386d95acb2045231fbcbe12fcaa2779
Processing pycadf-0.5.1.tar.gz
Writing /tmp/easy_install-93QzI3/pycadf-0.5.1/setup.cfg
Running pycadf-0.5.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-93QzI3/pycadf-0.5.1/egg-dist-tmp-DumyVX
/usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'pbr'
  warnings.warn(msg)
warning: install_lib: 'build/lib.linux-x86_64-2.7' does not exist -- no Python modules to install

zip_safe flag not set; analyzing archive contents...
Adding UNKNOWN 0.0.0 to easy-install.pth file

Installed /usr/local/lib/python2.7/dist-packages/UNKNOWN-0.0.0-py2.7.egg
error: Could not find required distribution pycadf>=0.4.1

看起来它是从pypi上获取这个软件包的，但安装时显示为“未知”。并不是每个软件包都会这样。我环境中已经安装了setuptools-5.5.1。

如果有人能提供解决办法，那就太好了。

Answer 1

我遇到了看起来一样的问题。对我来说，解决办法就是更新setuptools这个工具。