Spyder: qtpy.PythonQtError: No Qt bindings could be found

[davideuler]

Description of your problem

1. pip install -U spyder
   2.run spyder in mac
   3.errors occur as following
   Traceback (most recent call last):
   File "/usr/local/bin/spyder", line 11, in
   sys.exit(main())
   File "/usr/local/lib/python2.7/site-packages/spyder/app/start.py", line 103, in main
   from spyder.app import mainwindow
   File "/usr/local/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 49, in
   requirements.check_qt()
   File "/usr/local/lib/python2.7/site-packages/spyder/requirements.py", line 39, in check_qt
   import qtpy
   File "/usr/local/lib/python2.7/site-packages/qtpy/init.py", line 125, in
   raise PythonQtError('No Qt bindings could be found')
   qtpy.PythonQtError: No Qt bindings could be found
   

   Versions and main components

• Spyder Version:3.0
• Python Version: 2.7.10
• Operating system: osx

[ccordoba12]

You need to install PyQt4 or PyQt5 because that's not installed automatically by pip.

For PyQt5, just run

pip install pyqt5

[mubashirhanif]

@ccordoba12
I ran into this problem. I had to do
brew install pyqt
and it worked.

[ccordoba12]

That gives PyQt4, but now we prefer PyQt5 instead, so you need to run

brew install --with-python pyqt5

[soltanian69]

pip3 install pyqt5 worked for me

[citynorman]

This worked for me on Ubuntu 16.04 Python 2.7.12 default [GCC 5.4.0 20160609] on linux2
sudo apt-get install python-pyqt5 python-pyqt5.qtsvg python-pyqt5.qtwebkit

[mchijmma]

Hi there,

I think I'm having the same problem but I haven't been able to solve it.

I'm using a virtualenv, from where I have installed brew, spyder and pyqt5.

I think my problem is that brew is installing pyqt5 in a path that my virtualenv cannot find, but I'm not very sure how to procede.

This is what I am getting when:

(py) $ brew install pyqt5

==> Installing dependencies for pyqt: python3, qt, sip
==> Installing pyqt dependency: python3
==> Downloading https://homebrew.bintray.com/bottles/python3-3.6.1.sierra.bottle.1.tar.gz
Already downloaded: /Users/marco/Library/Caches/Homebrew/python3-3.6.1.sierra.bottle.1.tar.gz
==> Pouring python3-3.6.1.sierra.bottle.1.tar.gz
==> Using the sandbox
==> /usr/local/Cellar/python3/3.6.1/bin/python3 -s setup.py --no-user-cfg install --force --verbose --install-scripts=/usr/local/Cellar/python3/3.6.1/
==> /usr/local/Cellar/python3/3.6.1/bin/python3 -s setup.py --no-user-cfg install --force --verbose --install-scripts=/usr/local/Cellar/python3/3.6.1/
==> /usr/local/Cellar/python3/3.6.1/bin/python3 -s setup.py --no-user-cfg install --force --verbose --install-scripts=/usr/local/Cellar/python3/3.6.1/
==> Caveats
Pip, setuptools, and wheel have been installed. To update them
  pip3 install --upgrade pip setuptools wheel

You can install Python packages with
  pip3 install <package>

They will install into the site-package directory
  /usr/local/lib/python3.6/site-packages

See: http://docs.brew.sh/Homebrew-and-Python.html
==> Summary
🍺  /usr/local/Cellar/python3/3.6.1: 3,600 files, 55.8MB
==> Installing pyqt dependency: qt
==> Downloading https://homebrew.bintray.com/bottles/qt-5.8.0_2.sierra.bottle.tar.gz
Already downloaded: /Users/marco/Library/Caches/Homebrew/qt-5.8.0_2.sierra.bottle.tar.gz
==> Pouring qt-5.8.0_2.sierra.bottle.tar.gz
==> Caveats
We agreed to the Qt opensource license for you.
If this is unacceptable you should uninstall.

This formula is keg-only, which means it was not symlinked into /usr/local.

Qt 5 has CMake issues when linked

If you need to have this software first in your PATH run:
  echo 'export PATH="/usr/local/opt/qt/bin:$PATH"' >> ~/.bash_profile

For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/qt/lib
    CPPFLAGS: -I/usr/local/opt/qt/include

==> Summary
🍺  /usr/local/Cellar/qt/5.8.0_2: 8,667 files, 246.2MB
==> Installing pyqt dependency: sip
==> Downloading https://downloads.sourceforge.net/project/pyqt/sip/sip-4.19.2/sip-4.19.2.tar.gz
Already downloaded: /Users/marco/Library/Caches/Homebrew/sip-4.19.2.tar.gz
==> python configure.py --deployment-target=10.12 --destdir=/usr/local/Cellar/sip/4.19.2/lib/python2.7/site-packages --bindir=/usr/local/Cellar/sip/4.
==> make
==> make install
==> make clean
==> python3 configure.py --deployment-target=10.12 --destdir=/usr/local/Cellar/sip/4.19.2/lib/python3.6/site-packages --bindir=/usr/local/Cellar/sip/4
==> make
==> make install
==> make clean
Traceback (most recent call last):
  File "<string>", line 1, in <module>
AttributeError: 'module' object has no attribute 'getusersitepackages'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
AttributeError: 'module' object has no attribute 'getusersitepackages'
==> Caveats
The sip-dir for Python is /usr/local/share/sip.

Python modules have been installed and Homebrew's site-packages is not
in your Python sys.path, so you will not be able to import the modules
this formula installed. If you plan to develop with these modules,
please run:
  mkdir -p 
  echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> homebrew.pth
==> Summary
🍺  /usr/local/Cellar/sip/4.19.2: 16 files, 1MB, built in 14 seconds
==> Installing pyqt 
==> Downloading https://homebrew.bintray.com/bottles/pyqt-5.8.2.sierra.bottle.tar.gz
Already downloaded: /Users/marco/Library/Caches/Homebrew/pyqt-5.8.2.sierra.bottle.tar.gz
==> Pouring pyqt-5.8.2.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/pyqt/5.8.2: 856 files, 24.6MB`

then I try:

(py) $ echo 'export PATH="/usr/local/opt/qt/bin:$PATH"' >> ~/.bash_profile
(py) $ mkdir -p
usage: mkdir [-pv] [-m mode] directory ...
(py) $ echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> homebrew.pth

and I try to run spyder:

(py) $ spyder
Traceback (most recent call last):
  File "/Users/marco/Documents/py/bin/spyder", line 11, in <module>
    sys.exit(main())
  File "/Users/marco/Documents/py/lib/python2.7/site-packages/spyder/app/start.py", line 103, in main
    from spyder.app import mainwindow
  File "/Users/marco/Documents/py/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 49, in <module>
    requirements.check_qt()
  File "/Users/marco/Documents/py/lib/python2.7/site-packages/spyder/requirements.py", line 39, in check_qt
    import qtpy
  File "/Users/marco/Documents/py/lib/python2.7/site-packages/qtpy/__init__.py", line 125, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

Any ideas what am I doing wrong ?

Best.

[KingGhost]

@mchijmma Have you managed to solve the problem? I am running into the same issue.
Thanks!

[KingGhost]

Actually managed to solve it by running:

sudo spyder

I have no idea why I gotta use sudo, but I guess it works.
Good luck everyone :)

[mchijmma]

@KingGhost at the end I solved it by installing anaconda and just using spyder from a conda virtual env.

But I just checked with sudo spyder and it worked, Thanks !

[aquiire]

I had installed spyder successfully before in a separate environment and the version : 3,2,1
Then I installed spyder without any error in a nother environment.
Then when I tried to run it,
I got the same error:
```
No Qt bindings could be found

I ran, 

pip install pyqt5

as @ccordoba12 suggested.
I got this error:
```sh
Could not find a version that satisfies the requirement pyqt5 (from versions: )
No matching distribution found for pyqt5

Then I did,

sudo apt-get install python-pyqt5 python-pyqt5.qtsvg python-pyqt5.qtwebkit

As @citynorman said.

They were installed without a problem but when I ran spyder, I got the same error.

Then I looked what my spyder version. It was 3.2.3

So I uninstalled it and installed the 3.2.1 version and it worked.

pip uninstall spyder
pip install spyder==3.2.1

Versions:

python: 2.7.12
OS : Ubuntu 16.04

[masaddev]

I am facing the same issue when trying to install spyder in a python2.7 virtualenv:

I use pip install spyder inside a virtualenv

When I type spyder, it gives me the following error:
Traceback (most recent call last): File "/opt/virtual_caffe/caffe1_p2.7/bin/spyder", line 11, in <module> sys.exit(main()) File "/opt/virtual_caffe/caffe1_p2.7/local/lib/python2.7/site-packages/spyder/app/start.py", line 158, in main from spyder.app import mainwindow File "/opt/virtual_caffe/caffe1_p2.7/local/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 49, in <module> requirements.check_qt() File "/opt/virtual_caffe/caffe1_p2.7/local/lib/python2.7/site-packages/spyder/requirements.py", line 39, in check_qt import qtpy File "/opt/virtual_caffe/caffe1_p2.7/local/lib/python2.7/site-packages/qtpy/__init__.py", line 175, in <module> raise PythonQtError('No Qt bindings could be found') qtpy.PythonQtError: No Qt bindings could be found

I have tried the solution suggested by @aquiire - it does not seem to fix it.

When I install spyder in local user space outside virtualenv, it seems to work fine. Is there a setting that I am missing out? I would really appreciate any help in this regards.

[ccordoba12]

I am facing the same issue when trying to install spyder in a python2.7 virtualenv:

There's nothing we can do about this in our side because PyQt5 doesn't have wheels for Python 2, only Python 3.

[floriandeboissieu]

@devkicks
a solution can be found here

After installing the pyqt5 packages globally with your os package manager like commented by citynorman, run

pip install vext.pyqt5

To check the status, run vext -l. You should see something like the following:

Running in virtualenv [enabled]
pyqt5.vext

If done on several virtualenv in a row, the cached wheel of vext.pyqt5 should be removed between each install. It can be found with ls ~/.cache/pip/wheels/*/*/*/* on linux.

[texadactyl]

In Xubuntu 18.04.1 and Python 2 (not my choice!), the following worked perfectly:
sudo apt-get install python-pyqt5 python-pyqt5.qtsvg python-pyqt5.qtwebkit

Yes, I am trying to get these Scientists to face the reality of migration to Python 3 this year. However, it is nice to know that Spyder can help these folks bridge the gap.

Thank you, @ccordoba12

[dberrian]

I managed to solve that as follow:
1- Run this on Anaconda prompt : conda install -c anaconda pyqt
2 - Uninstall and install Spyder through Anaconda navigator.

[TaeheeJeong]

I solved the same issue as following.
conda install spyder [ in virtualenv]