为什么我不能从pypi安装PyQt5？

Question

我想在pycharm中使用PyQt5。尝试从可用软件包安装软件包后，出现一个错误：“安装软件包失败：安装软件包PyQt5时出错。”
完整的日志如下：

------------------------------------------------------------
C:\Program Files (x86)\JetBrains\PyCharm 3.0.1\helpers\packaging_tool.py run on 02/05/14 16:13:23
Downloading/unpacking PyQt5

  Getting page https://pypi.python.org/simple/PyQt5/
  URLs to search for versions for PyQt5:
  * https://pypi.python.org/simple/PyQt5/
  Analyzing links from page https://pypi.python.org/simple/PyQt5/
  Could not find any downloads that satisfy the requirement PyQt5

No distributions at all found for PyQt5

Exception information:
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\pip-1.3.1-py2.7.egg\pip\basecommand.py", line 139, in main
    status = self.run(options, args)
  File "C:\Python27\lib\site-packages\pip-1.3.1-py2.7.egg\pip\commands\install.py", line 266, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "C:\Python27\lib\site-packages\pip-1.3.1-py2.7.egg\pip\req.py", line 1026, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "C:\Python27\lib\site-packages\pip-1.3.1-py2.7.egg\pip\index.py", line 171, in find_requirement
    raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for PyQt5

我该怎么办？

我就是这么做的：

• 安装了Python 3.3并添加到PATH
• 已安装PyQt5-5.2-gpl-Py3.3-Qt5.2.0-x64.exe

我不知道如何在pycharm中使用PyQt 你能提供更多的信息吗？

Answer 1

仅供参考，在3.6.5中使用pip安装QtPy5。根据https://www.riverbankcomputing.com/software/sip/download甚至3.5及更高版本。

Answer 2

AFAIK，不能从PyPI安装PyQt4/PyQt5。你必须单独安装。

如果看到this链接，可以看到PyPI上没有列出PyQt5的包（PyQt4也是如此）。因此，您需要从here单独下载安装程序并安装它。

这就是

DistributionNotFound: No distributions at all found for PyQt5

指。

[更新]：您很可能还需要以同样的方式安装sip，方法如下：https://askubuntu.com/a/666336/12214