我在 OSX 10.11 上运行通过 homebrew 安装的 python 附带的 pip v1.5.6
pip install emo例如，运行时我得到：
Could not find any downloads that satisfy the requirement emo
pip.log内容如下：
------------------------------------------------------------
/usr/local/bin/pip run on Mon Jan 5 11:50:28 2015
Downloading/unpacking emo
Getting page https://pypi.python.org/simple/emo/
URLs to search for versions for emo:
* https://pypi.python.org/simple/emo/
Analyzing links from page https://pypi.python.org/simple/emo/
Could not find any downloads that satisfy the requirement emo
Cleaning up...
Removing temporary dir /private/var/folders/v0/jsnj03_s7kvcf6xt32s_bt_40000gn/T/pip_build_elzi...
No distributions at all found for emo
Exception information:
Traceback (most recent call last):
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/basecommand.py", line 122, in main
status = self.run(options, args)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/commands/install.py", line 278, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/req.py", line 1177, in prepare_files
url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/index.py", line 277, in find_requirement
raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for emo
https://pypi.python.org/simple/emo对我来说加载需要很长时间但实际上确实存在。
知道会发生什么吗？其他软件包（例如“scapy”）安装正常。
答案1
该emo包实际上不存在 - 请参阅吡啶甲酸页面了解详情。其状态为“规划中”，这意味着有人注册了该软件包名称，但尚未实际开发该软件包。