7

I had anaconda running on my machine. few days ago i had to update some of the libraries because they were outdated. after the update, I was not able to launch anaconda-navigator or spyder anymore due to the following error:

(base) C:\>qtpy.PythonQtError: No Qt bindings could be found

I've tried the following:

*unistall/reinstall the whole package *following commands:

conda update conda
conda update --all
conda install pyqt5
pip install pyqt5

*reset spyder settings

the installed packages and urls:

(base) C:\>SPYDER
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\qtpy\__init__.py", line 202, in <module>
    from PySide import __version__ as PYSIDE_VERSION  # analysis:ignore
ModuleNotFoundError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\Scripts\spyder-script.py", line 10, in <module>
    sys.exit(main())
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\app\start.py", line 186, in main
    from spyder.app import mainwindow
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\app\mainwindow.py", line 48, in <module>
    requirements.check_qt()
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\requirements.py", line 41, in check_qt
    import qtpy
  File "C:\ProgramData\Anaconda3\lib\site-packages\qtpy\__init__.py", line 208, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

(base) C:\>conda list --show-channel-urls
# packages in environment at C:\ProgramData\Anaconda3:
#
# Name                    Version                   Build  Channel
_ipyw_jlab_nb_ext_conf    0.1.0                    py37_0    defaults
alabaster                 0.7.12                     py_0    conda-forge
anaconda                  custom                   py37_0    defaults
anaconda-client           1.7.2                      py_0    conda-forge
anaconda-navigator        1.9.7                    py37_0    defaults
anaconda-project          0.8.2                      py_1    conda-forge
asn1crypto                0.24.0                py37_1003    conda-forge
astroid                   2.2.5                    py37_0    conda-forge
astropy                   3.1.2            py37hfa6e2cd_0    conda-forge
atomicwrites              1.3.0                      py_0    conda-forge
attrs                     19.1.0                     py_0    conda-forge
babel                     2.6.0                      py_1    conda-forge
backcall                  0.1.0                      py_0    conda-forge
backports                 1.0                        py_2    conda-forge
backports.os              0.1.1                 py37_1000    conda-forge
backports.shutil_get_terminal_size 1.0.0                      py_3    conda-forge
beautifulsoup4            4.7.1                 py37_1001    conda-forge
bitarray                  0.9.2            py37hfa6e2cd_0    conda-forge
bkcharts                  0.2                      py37_0    defaults
blas                      1.0                         mkl    conda-forge
bleach                    3.1.0                      py_0    conda-forge
blinker                   1.4                        py_1    conda-forge
blosc                     1.16.3               h6538335_0    conda-forge
bokeh                     1.1.0                    py37_0    conda-forge
boto                      2.49.0                     py_0    conda-forge
boto3                     1.9.143                    py_0    conda-forge
botocore                  1.12.143                   py_1    conda-forge
bottleneck                1.2.1           py37h452e1ab_1001    conda-forge
bz2file                   0.98                       py_0    conda-forge
bzip2                     1.0.6             hfa6e2cd_1002    conda-forge
ca-certificates           2019.3.9             hecc5488_0    conda-forge
certifi                   2019.3.9                 py37_0    conda-forge
cffi                      1.12.3           py37hb32ad35_0    conda-forge
chardet                   3.0.4                 py37_1003    conda-forge
click                     7.0                        py_0    conda-forge
cloudpickle               0.8.1                      py_0    conda-forge
clyent                    1.2.2                      py_1    conda-forge
colorama                  0.4.1                      py_0    conda-forge
comtypes                  1.1.7                 py37_1000    conda-forge
conda                     4.6.14                   py37_0    conda-forge
conda-build               3.17.8                   py37_1    conda-forge
conda-env                 2.6.0                         1    conda-forge
conda-verify              3.1.1                 py37_1000    conda-forge
console_shortcut          0.1.1                         3    defaults
contextlib2               0.5.5                      py_2    conda-forge
cryptography              2.6.1            py37hb32ad35_0    conda-forge
curl                      7.64.1               h4496350_0    conda-forge
cycler                    0.10.0                     py_1    conda-forge
cython                    0.29.7           py37h6538335_0    conda-forge
cytoolz                   0.9.0.1         py37hfa6e2cd_1001    conda-forge
dask                      1.2.0                      py_0    conda-forge
dask-core                 1.2.0                      py_0    conda-forge
decorator                 4.4.0                      py_0    conda-forge
defusedxml                0.5.0                      py_1    conda-forge
distributed               1.27.1                   py37_0    conda-forge
docutils                  0.14                  py37_1001    conda-forge
entrypoints               0.3                   py37_1000    conda-forge
et_xmlfile                1.0.1                 py37_1000    conda-forge
fastcache                 1.1.0            py37hfa6e2cd_0    conda-forge
filelock                  3.0.10                     py_0    conda-forge
flask                     1.0.2                      py_2    conda-forge
freetype                  2.10.0               h5db478b_0    conda-forge
future                    0.17.1                py37_1000    conda-forge
gensim                    3.7.1            py37h6538335_1    conda-forge
get_terminal_size         1.0.0                h38e98db_0    defaults
gevent                    1.4.0            py37hfa6e2cd_0    conda-forge
glob2                     0.6                        py_0    conda-forge
greenlet                  0.4.15           py37hfa6e2cd_0    conda-forge
h5py                      2.9.0           nompi_py37h3cb27cb_1102    conda-forge
hdf5                      1.10.4          nompi_hcc15c50_1106    conda-forge
heapdict                  1.0.0                 py37_1000    conda-forge
html5lib                  1.0.1                      py_0    conda-forge
icc_rt                    2019.0.0             h0cc432a_1    defaults
icu                       58.1                     vc14_0    conda-forge
idna                      2.8                   py37_1000    conda-forge
imageio                   2.5.0                    py37_0    conda-forge
imagesize                 1.1.0                      py_0    conda-forge
importlib_metadata        0.9                      py37_0    conda-forge
intel-openmp              2019.3                      203    defaults
ipykernel                 5.1.0           py37h39e3cac_1002    conda-forge
ipython                   7.5.0            py37h39e3cac_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
ipywidgets                7.4.2                      py_0    conda-forge
isort                     4.3.18                   py37_0    conda-forge
itsdangerous              1.1.0                      py_0    conda-forge
jdcal                     1.4.1                      py_0    conda-forge
jedi                      0.13.3                   py37_0    conda-forge
jinja2                    2.10.1                     py_0    conda-forge
jmespath                  0.9.4                      py_0    conda-forge
jpeg                      9c                hfa6e2cd_1001    conda-forge
jsonschema                3.0.1                    py37_0    conda-forge
jupyter                   1.0.0                      py_2    conda-forge
jupyter_client            5.2.4                      py_3    conda-forge
jupyter_console           6.0.0                      py_0    conda-forge
jupyter_core              4.4.0                      py_0    conda-forge
jupyterlab                0.35.6                   py37_0    conda-forge
jupyterlab_server         0.2.0                      py_0    conda-forge
keyring                   19.0.1                   py37_0    conda-forge
kiwisolver                1.1.0            py37he980bc4_0    conda-forge
krb5                      1.16.3            hdd46e55_1001    conda-forge
lazy-object-proxy         1.3.1           py37hfa6e2cd_1000    conda-forge
libarchive                3.3.3             h0005e80_1004    conda-forge
libblas                   3.8.0                     8_mkl    conda-forge
libcblas                  3.8.0                     8_mkl    conda-forge
libcurl                   7.64.1               h4496350_0    conda-forge
libiconv                  1.15              hfa6e2cd_1005    conda-forge
liblief                   0.9.0                ha925a31_2    defaults
libpng                    1.6.37               h7602738_0    conda-forge
libsodium                 1.0.16            h2fa13f4_1001    conda-forge
libssh2                   1.8.2                h642c060_2    conda-forge
libtiff                   4.0.10            h016b793_1002    conda-forge
libxml2                   2.9.9                h9ce36c8_0    conda-forge
libxslt                   1.1.32            heafd4d3_1002    conda-forge
llvmlite                  0.28.0                   py37_0    conda-forge
locket                    0.2.0                      py_2    conda-forge
lxml                      4.3.3            py37heafd4d3_0    conda-forge
lz4-c                     1.8.3             he025d50_1001    conda-forge
lzo                       2.10              hfa6e2cd_1000    conda-forge
m2w64-gcc-libgfortran     5.3.0                         6    defaults
m2w64-gcc-libs            5.3.0                         7    defaults
m2w64-gcc-libs-core       5.3.0                         7    defaults
m2w64-gmp                 6.1.0                         2    defaults
m2w64-libwinpthread-git   5.0.0.4634.697f757               2    defaults
markupsafe                1.1.1            py37hfa6e2cd_0    conda-forge
matplotlib                3.0.3                    py37_1    conda-forge
matplotlib-base           3.0.3            py37h3e3dc42_1    conda-forge
mccabe                    0.6.1                      py_1    conda-forge
menuinst                  1.4.16                   py37_0    conda-forge
mistune                   0.8.4           py37hfa6e2cd_1000    conda-forge
mkl                       2019.3                      203    defaults
mkl-service               2.0.1            py37hfa6e2cd_0    conda-forge
mkl_fft                   1.0.12           py37hfa6e2cd_1    conda-forge
mkl_random                1.0.4            py37h830ac7b_0    conda-forge
mock                      3.0.4                    py37_0    conda-forge
more-itertools            4.3.0                 py37_1000    conda-forge
mpmath                    1.1.0                      py_0    conda-forge
msgpack-python            0.6.1            py37he980bc4_0    conda-forge
msys2-conda-epoch         20160418                      1    defaults
multipledispatch          0.6.0                      py_0    conda-forge
navigator-updater         0.2.1                    py37_0    defaults
nbconvert                 5.5.0                      py_0    conda-forge
nbformat                  4.4.0                      py_1    conda-forge
networkx                  2.3                        py_0    conda-forge
nltk                      3.2.5                      py_0    conda-forge
nose                      1.3.7                 py37_1002    conda-forge
notebook                  5.7.8                    py37_0    conda-forge
numba                     0.43.1           py37hf9181ef_0    defaults
numexpr                   2.6.9           py37h6538335_1000    conda-forge
numpy                     1.16.3           py37h19fb1c0_0    defaults
numpy-base                1.16.3           py37hc3f5095_0    defaults
numpydoc                  0.9.1                      py_0    conda-forge
oauthlib                  3.0.1                      py_0    conda-forge
olefile                   0.46                       py_0    conda-forge
openpyxl                  2.6.1                      py_0    conda-forge
openssl                   1.1.1b               hfa6e2cd_2    conda-forge
packaging                 19.0                       py_0    conda-forge
pandas                    0.24.2           py37h6538335_0    conda-forge
pandoc                    2.7.2                         0    conda-forge
pandocfilters             1.4.2                      py_1    conda-forge
parso                     0.4.0                      py_0    conda-forge
partd                     0.3.9                      py_0    conda-forge
path.py                   12.0.1                     py_0    conda-forge
pathlib2                  2.3.3                 py37_1000    conda-forge
patsy                     0.5.1                      py_0    conda-forge
pep8                      1.7.1                      py_0    conda-forge
pickleshare               0.7.5                 py37_1000    conda-forge
pillow                    6.0.0            py37h9a613e6_0    conda-forge
pip                       19.1.1                   py37_0    conda-forge
pkginfo                   1.5.0.1                    py_0    conda-forge
pluggy                    0.9.0                      py_0    conda-forge
ply                       3.11                       py_1    conda-forge
powershell_shortcut       0.0.1                         2    defaults
prometheus_client         0.6.0                      py_0    conda-forge
prompt_toolkit            2.0.9                      py_0    conda-forge
psutil                    5.6.2            py37hfa6e2cd_0    conda-forge
py                        1.8.0                      py_0    conda-forge
py-lief                   0.9.0            py37ha925a31_2    defaults
pycodestyle               2.5.0                      py_0    conda-forge
pycosat                   0.6.3           py37hfa6e2cd_1001    conda-forge
pycparser                 2.19                     py37_1    conda-forge
pycrypto                  2.6.1           py37hfa6e2cd_1002    conda-forge
pycurl                    7.43.0.2         py37h636d3bd_0    conda-forge
pyflakes                  2.1.1                      py_0    conda-forge
pygments                  2.3.1                      py_0    conda-forge
pyjwt                     1.7.1                      py_0    conda-forge
pylint                    2.3.1                    py37_0    conda-forge
pyodbc                    4.0.26           py37h6538335_0    conda-forge
pyopenssl                 19.0.0                   py37_0    conda-forge
pyparsing                 2.4.0                      py_0    conda-forge
pyqt                      5.9.2            py37h6538335_2    defaults
pyreadline                2.1                   py37_1000    conda-forge
pyrsistent                0.15.1           py37hfa6e2cd_0    conda-forge
pysocks                   1.6.8                 py37_1002    conda-forge
pytables                  3.5.1            py37hb9ab341_1    conda-forge
pytest                    4.4.1                    py37_0    conda-forge
pytest-arraydiff          0.3                        py_0    conda-forge
pytest-astropy            0.5.0                      py_0    conda-forge
pytest-doctestplus        0.3.0                      py_0    conda-forge
pytest-openfiles          0.3.1                      py_0    conda-forge
pytest-remotedata         0.3.1                      py_0    conda-forge
python                    3.7.3                hb12ca83_0    conda-forge
python-crfsuite           0.9.6           py37he980bc4_1000    conda-forge
python-dateutil           2.8.0                      py_0    conda-forge
python-libarchive-c       2.8                   py37_1004    conda-forge
pytz                      2019.1                     py_0    conda-forge
pywavelets                1.0.3            py37h452e1ab_1    conda-forge
pywin32                   224             py37hfa6e2cd_1000    conda-forge
pywin32-ctypes            0.2.0                 py37_1000    conda-forge
pywinpty                  0.5.5                 py37_1000    conda-forge
pyyaml                    5.1              py37hfa6e2cd_0    conda-forge
pyzmq                     18.0.1           py37he7828b0_1    conda-forge
qt                        5.9.7                hc6833c9_1    conda-forge
qtawesome                 0.5.7              pyh8a2030e_0    conda-forge
qtconsole                 4.4.3                      py_0    conda-forge
qtpy                      1.7.1              pyhde82777_0    conda-forge
requests                  2.21.0                py37_1000    conda-forge
requests-oauthlib         1.2.0                      py_0    conda-forge
rope                      0.14.0                     py_0    conda-forge
ruamel_yaml               0.15.71         py37hfa6e2cd_1000    conda-forge
s3transfer                0.2.0                    py37_0    conda-forge
scikit-image              0.15.0           py37h6538335_0    conda-forge
scikit-learn              0.20.3           py37h3d241f0_1    conda-forge
scipy                     1.2.1            py37h29ff71c_0    defaults
seaborn                   0.9.0                      py_1    conda-forge
send2trash                1.5.0                      py_0    conda-forge
setuptools                41.0.1                   py37_0    conda-forge
simplegeneric             0.8.1                      py_1    conda-forge
singledispatch            3.4.0.3               py37_1000    conda-forge
sip                       4.19.8          py37h6538335_1000    conda-forge
six                       1.12.0                py37_1000    conda-forge
smart_open                1.8.3                      py_0    conda-forge
snappy                    1.1.7             h6538335_1002    conda-forge
snowballstemmer           1.2.1                      py_1    conda-forge
sortedcollections         1.1.2                      py_0    conda-forge
sortedcontainers          2.1.0                      py_0    conda-forge
soupsieve                 1.9.1                    py37_0    conda-forge
sphinx                    2.0.1                      py_0    conda-forge
sphinxcontrib             1.0                      py37_1    defaults
sphinxcontrib-applehelp   1.0.1                      py_0    conda-forge
sphinxcontrib-devhelp     1.0.1                      py_0    conda-forge
sphinxcontrib-htmlhelp    1.0.2                      py_0    conda-forge
sphinxcontrib-jsmath      1.0.1                      py_0    conda-forge
sphinxcontrib-qthelp      1.0.2                      py_0    conda-forge
sphinxcontrib-serializinghtml 1.1.1                      py_0    conda-forge
sphinxcontrib-websupport  1.1.0                      py_1    conda-forge
spyder                    3.3.4                    py37_0    defaults
spyder-kernels            0.4.4                    py37_0    conda-forge
sqlalchemy                1.3.3            py37hfa6e2cd_0    conda-forge
sqlite                    3.26.0            hfa6e2cd_1001    conda-forge
statsmodels               0.9.0           py37hfa6e2cd_1000    conda-forge
sympy                     1.4                      py37_0    conda-forge
tblib                     1.3.2                      py_1    conda-forge
terminado                 0.8.2                    py37_0    conda-forge
testpath                  0.4.2                   py_1001    conda-forge
tk                        8.6.9             hfa6e2cd_1001    conda-forge
toolz                     0.9.0                      py_1    conda-forge
tornado                   6.0.2            py37hfa6e2cd_0    conda-forge
tqdm                      4.31.1                     py_0    conda-forge
traitlets                 4.3.2                 py37_1000    conda-forge
twython                   3.7.0                      py_0    conda-forge
unicodecsv                0.14.1                     py_1    conda-forge
urllib3                   1.24.2                   py37_0    conda-forge
vc                        14.1                 h0510ff6_4    defaults
vs2015_runtime            14.15.26706          h3a45250_4    defaults
wcwidth                   0.1.7                      py_1    conda-forge
webencodings              0.5.1                      py_1    conda-forge
werkzeug                  0.15.2                     py_0    conda-forge
wheel                     0.33.1                   py37_0    conda-forge
widgetsnbextension        3.4.2                 py37_1000    conda-forge
win_inet_pton             1.1.0                    py37_0    conda-forge
win_unicode_console       0.5                   py37_1000    conda-forge
wincertstore              0.2                   py37_1002    conda-forge
winpty                    0.4.3                         4    conda-forge
wrapt                     1.11.1           py37hfa6e2cd_0    conda-forge
xlrd                      1.2.0                      py_0    conda-forge
xlsxwriter                1.1.8                      py_0    conda-forge
xlwings                   0.15.8                   py37_0    conda-forge
xlwt                      1.3.0                      py_1    conda-forge
xz                        5.2.4             h2fa13f4_1001    conda-forge
yaml                      0.1.7             hfa6e2cd_1001    conda-forge
zeromq                    4.3.1             he025d50_1000    conda-forge
zict                      0.1.4                      py_0    conda-forge
zipp                      0.4.0                      py_0    conda-forge
zlib                      1.2.11            h2fa13f4_1004    conda-forge
zstd                      1.3.3                    vc14_1    conda-forge

(base) C:\>
(base) C:\>CONDA INSTALL pyqt5

Does anyone has any idea that might help? Thanks in advance!!

3 Answers 3

11

I faced a similar problem, however, for me, the solution was an easy one. Please go through the following points.

  1. Keep a native python installed on your machine.
  2. Run "pip install pyqt5-tools" from cmd.
  3. You should have a message on screen post-installation - "Successfully installed click-7.0 pyqt5-5.13.0 pyqt5-tools-5.13.0.1.5 python-dotenv-0.10.3" :

Installation snap for Reference

Hope this will work for you :)

1
  • 2
    "pip install pyqt5-tools" saved my day on Linux
    – lanenok
    Jun 2, 2021 at 18:18
2

I had the same problem "qtpy.PythonQtError: No Qt bindings could be found" after an update to spyder 4.0.1

After trying $pip3 install -U pyqt5 --user I got the error message:

_'ERROR: spyder 4.0.1 has requirement pyqt5<5.13; python_version >= "3", but you'll have pyqt5 5.14.1 which is incompatible.'_

So I updated with a compatible version:

pip3 install pyqt5==5.12 --user

And now spyder is working.

1
  • You saved me a couple hours.
    – Love
    Dec 4, 2020 at 15:42
1

The real fix that worked for me, because I really did this, was to install the module that was causing the error. That is the PySide module.

Do not install PySide (pip install PySide) unless you are using Python 3.4 or less.
If you are running Python 3.4 and up (up to 3.7), you need to install PySide2 (pip install PySide2).

2
  • Please format your code. It's hard to read it.
    – Love
    Dec 4, 2020 at 15:40
  • 1
    @Love, you can always suggest edits if something is hard to read. Jan 8, 2021 at 11:22

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