Why can't I install PyQt5 from the pypi?

Question

I want to use PyQt5 in pycharm. After trying to install the package from Available packages, an error says: 'Install packages failed: Error occurred when installing package PyQt5.'
The complete log is here:

------------------------------------------------------------
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

What should I do?

This is what I've done is this:

• Installed Python 3.3 and added to PATH
• Installed PyQt5-5.2-gpl-Py3.3-Qt5.2.0-x64.exe

And I don't know how to use PyQt in pycharm.
can you provide more information?

Answer 1

AFAIK, you cannot install PyQt4/PyQt5 from PyPI. You would have to install it separately.

If you see this link, you can see that there are no listed packages for PyQt5 (likewise for PyQt4) on PyPI. So, you would need to download the installer separately from here and install it.

That is what the

DistributionNotFound: No distributions at all found for PyQt5

refers to.

[UPDATE]: You'll also most likely need to install sip the same way, here's how: https://askubuntu.com/a/666336/12214

Answer 2

FYI, installing QtPy5 with pip works in 3.6.5. According to https://www.riverbankcomputing.com/software/sip/download even 3.5 and later.