Can't install PyQt5 using pip

Question

I have tried to install PyQt5 using

pip install PyQt5

and

sudo -H pip install PyQt5

both of them give me the errors

ERROR: Could not find a version that satisfies the requirement PyQt5 (from versions: none)
ERROR: No matching distribution found for PyQt5

I use Ubuntu 18.04.

My python version is: Python 2.7.15rc1

I have already installed python3-pip and tried to install PyQt5 using

pip3 install PyQt5

I get the error

Traceback (most recent call last):
  File "/usr/local/bin/pip3", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3241, in <module>
    @_call_aside
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3225, in _call_aside
    f(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3254, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 585, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 598, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 786, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'pip==9.0.1' distribution was not found and is required by the application

My python3 version is: Python3.6.7.

In a few months Python2 will be deprecated so many libraries have already decided not to support Python2, and one of those libraries is PyQt5 as indicated by the [docs](https://www.riverbankcomputing.com/software/pyqt/download5/): *Wheels are provided for Python v3.5 and later for 64-bit Linux, macOS and 32-bit and 64-bit Windows.* So it is advisable that you use Python3 if you are learning or if you are going to develop an application: `pip3 install PyQt5` — eyllanesc, Jun 02 '19 at 21:09
find it strange that pip3 use python2: `File "/usr/local/lib/python2.7/dist-packages` — eyllanesc, Jun 02 '19 at 21:19
I thought that too. I was thinking of uninstalling Python2 but found in another post that is not a good idea? — rsaavedra, Jun 02 '19 at 21:20

score 23 · Answer 1 · answered Feb 14 '20 at 20:30

23

You need to upgrade your pip

pip install --user --upgrade pip

Then do a fresh install

pip install PyQt5

or

pip3 install PyQt5

answered Feb 14 '20 at 20:30

Muhammad

381
3
10

2

This is one useful tip that I always have to remind myself. – dojuba Apr 09 '20 at 18:01
This was the answer for me. – Erik Jan 30 '22 at 21:16
didn't work for me on Linux – Pab Apr 26 '23 at 01:21

score 20 · Accepted Answer · edited Jun 02 '19 at 21:20

20

Try this:

python3 -m pip install PyQt5

edited Jun 02 '19 at 21:20

Nazim Kerimbekov

4,712
8
34
58

answered Jun 02 '19 at 21:16

Mwangi Kabiru

423
2
10

Thank you! this works. Can you explain this command a little more? – rsaavedra Jun 02 '19 at 21:19
It tells the terminal to run a Python module named pip with the commands `install PyQt5`. `Python3` explicitly directs which version to use, which is important when you have several installed. – Mwangi Kabiru Jun 02 '19 at 21:31
2

-m mod : run library module as a script (terminates option list) – rsaavedra Jun 02 '19 at 21:35

score 6 · Answer 3 · answered Apr 10 '20 at 10:51

6

I know it is a bit late to answer. In PyCharm, even upgraded pip gives error in this package. Downgraded the PyQt5 version to 5.12.2 works fine. Use,

pip install PyQt5==5.12.2 
pip install PyQtWebEngine==5.12

Or,

pip3 install PyQt5==5.12.2
pip3 install PyQtWebEngine==5.12

Works fine for me.

answered Apr 10 '20 at 10:51

Siva Subramanian

61
1
2

This worked for me. But why do you need to install PyQtWebEngine==5.12? – Pab Apr 26 '23 at 01:23

score 0 · Answer 4 · answered Jun 02 '19 at 21:15

0

You can run command

   pip3 install PyQt5

or for Python 2 you can manually install from https://www.riverbankcomputing.com/software/pyqt/download5

answered Jun 02 '19 at 21:15

Mihai8

3,113
1
21
31

I have edited my post, I still get an error with that command – rsaavedra Jun 02 '19 at 21:15
Try the second variant. – Mihai8 Jun 02 '19 at 21:16

Can't install PyQt5 using pip

4 Answers4

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