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How to install matlabengine (Windows 10, MATLAB R2020b, Python 3.8.10)

I have the following environment:
Windows 10
Python 3.8.10
MATLAB R2020b
I'm trying to install matlabengine (pip install matlabengine) package, and I'm getting the following error:
RuntimeError: No compatible MATLAB installation found in Windows Registry. This release of MATLAB Engine API for Python is compatible with version 9.13. The found versions were 9.9
What am I missing ? (according to https://pypi.org/project/matlabengine/) it seems I'm using the right versions.
How can I check the versions I have (9.9 or 9.13 because as I wrote above I have MATLAB R2020b and Python 3.8.10).

The error is about the MATLAB version, not the version of matlabengine (the Python module).
You wrote that you have MATLAB 2020b. That is the release name for MATLAB version 9.9, as can be seen in this table on Wikipedia.
As can be read on the description of matlabengine 9.13.1, this engine version requires MATLAB release R2022b (= 9.13).
To use matlabengine with MATLAB 2020b, install version 9.9.1:
python -m pip install matlabengine==9.9.1

You need to try all versions of MATLAB engine starting from the latest one going backwards. What worked for me on Ubuntu was
$ python -m pip install matlabengine==9.12.17
NB: To get a list of all the possible versions, try install one that doesn't exist e.g.
$ python -m pip install matlabengine==9.9.2
and it will give you an error with the list of possible versions.

You can try to install specific version of matlabengine.
pip install matlabengine==9.13.1
If they cannot find your version, you might need to update pip.
Also, you can check your current matlabengine version.
pip show matlabengine

I deleted default python on fedora and now getting errors

I recently deleted the default python version on Fedora 31 and installed python 3.9 then made it as default, now I have multiple versions of python.
If I type: whereis python in my terminal this list appear:
python: /usr/bin/python /usr/bin/python3.9 /usr/bin/python3.7 /usr/bin/python3.9-config /usr/bin/python3.7m /usr/bin/python3.9-x86_64-config /usr/lib/python3.9 /usr/lib/python2.6 /usr/lib/python3.7 /usr/lib64/python3.9 /usr/lib64/python3.7 /usr/local/bin/python3.7m-config /usr/local/bin/python3.7 /usr/local/bin/python3.7m /usr/local/lib/python3.7 /usr/include/python3.9 /usr/include/python3.7m /usr/share/man/man1/python.1.gz /usr/src/Python-3.7.4/python
If I type pip then I get ModuleNotFoundError: No module named 'pip'
Also multiple packages are broken such as dnf, argcomplete, pip, etc.
I cannot update or install anything.
How can I solve this problem ?

Grab/Download the original python RPMs for your distro and reinstall them that way if they're not still cached under /var ....

With Python 3.9 you should use pip3...So install python3-pip.
That should do the trick

I tried many solutions and didn't work, however I ended up backing up my data and completely deleting the OS, then I downloaded the last version of fedora and restored my data on it.
thanks for your time

I ran into this unfortunate situation as well on Fedora 35. dnf, yum, and a bunch of other things broke.
I didn't manage to get Python 3.10 back through dnf, yum, or apt-get. I downloaded the rpm from https://fedora.pkgs.org/35/fedora-x86_64/python3-3.10.0-1.fc35.x86_64.rpm.html. It did require a dependency of python3-libs which I downloaded from: https://fedora.pkgs.org/35/fedora-x86_64/python3-libs-3.10.0-1.fc35.x86_64.rpm.html.
I installed python3-libs first with sudo rpm -i python3-libs-3.10.0-1.fc35.x86_64.rpm --force as there were some file writing conflicts. I ran the same command for the python3.10 rpm with the --force flag as well since there were 2 conflicts. After that, everything worked perfectly! Managed to dodge having to do a full reinstall.

Can't find Brew installed packages on Mac M1 in Pycharm

I'm having trouble installing packages and using them in Pycharm. I've followed various threads (I'm new to Macs and seem to have tried everything) now I'm stuck.
In this case, I want to use the package xgboost.
I have brew installed, after launching a terminal using Rosetta:
%brew install xgboost
Warning: xgboost 1.3.3 is already installed and up-to-date.
It appears installed OK here:
/opt/homebrew/Cellar/xgboost
I also have Python installed here:
/opt/homebrew/Cellar/python#3.9
But no matter how I configure an Interpreter in Pycharm, I can't seem to get the package recognised.
Where have I gone wrong?

I am very unsure exactly how, but I've got this working.
Following: https://abbasegbeyemi.me/blog/homebrew-python-apple-m1
I changed the order of elements in my path:
export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/homebrew/bin
then a new interpreter in Pycharm using:
usr/local/Cellar/Python#3.9/3.9.2_2/bin/python3.9
Now I can install packages just using pip in pycharm and it works.
This has been 6 hours of pain - warning to anyone who isn't well versed in macs, setting up an M1 for python dev was a complete nightmare for me.

Docs: https://xgboost.readthedocs.io/en/latest/build.html
Pre-built binary wheel for Python
If you are planning to use Python, consider installing XGBoost from a pre-built binary wheel, available from Python Package Index (PyPI). You may download and install it by running
# Ensure that you are downloading one of the following:
# * xgboost-{version}-py2.py3-none-manylinux1_x86_64.whl
# * xgboost-{version}-py2.py3-none-win_amd64.whl
pip3 install xgboost

How can I install 32 bit pyq on Mac OS 64 bit, for python 3.6-32

I have 32 bit kdb on my Mac OS, and want to use pyq with Python3.6 32 bit version.
Currently, I have it working perfectly for 32 bit Python2.7 after installing it as below.
./python2.7-32 pip install -i https://pyq.enlnt.com --no-binary pyq pyq
Now I need to use with Python3.6 and try similarly to install the 32 bit via:
./python3.6-32 pip install -i https://pyq.enlnt.com --no-binary pyq pyq
It does install it but when I try to run in after something happens and It gives me an error:
~$:/Library/Frameworks/Python.framework/Versions/3.6/bin> ./pyq
'2017.05.02T21:14:50.022 dlopen(libpython3.6m.dylib, 10): image not found
#
"q"
"r:py[`pyq^`$getenv`PYTHONEXECUTABLE;args;lib]"

From the error message
dlopen(libpython3.6m.dylib, 10): image not found
it looks like you've built a statically linked python and used the --with-pymalloc config option. Please make sure that you configure your python with --enable-shared. Better yet, use a universal built from brew:
brew install sashkab/python/python36 --universal
Finally, if you are going to use multiple versions of python, consider using virtual environments.
For detailed instructions, see "Installing PyQ on macOS".

download pygame for python 3.4 [duplicate]

So I have this little problem. When I try to install Pygame for Python 3.4 I download a .whl (wheel?) file and don't know how to use it. Some guys told me something about pip but don't know how to use/install it.

You can install the wheel file for Python 3.4 here:
First you have to install the wheel package from pip then install Pygame.
pip install wheel
pip install pygame‑1.9.2a0‑cp34‑none‑win_amd64.whl
Here's a video to help you install pip on Youtube.

Here is a great VIDEO tutorial: http://goo.gl/PurJqk (it is on youtube)
This is what I use to install .whl modules to python (I do this in the 64 bit windows cmd):
cd "C:\Users\(YOUR USERNAME)\Desktop"
(assuming that you have the .whl file on your desktop)
C:\Python34\Scripts\pip install filename.whl
(where filename.whl is the full name of the .whl file, with the .whl extension)
After that it will install, and you are free to use PyGame!

14 y/o? Good for you! You can put the file into your python/scripts folder and run pip install *file* (where *file* is your filename).

Here is a link to download pygame for different versions of Python, up to Python 3.4 in 32 bit and 64 bit.
To test if it installed properly, open your python shell and type in this code:
import pygame
Please note that these are not official binaries and you are basically trusting a third-party to compile and provide the binary for you.

Step 1
If you have not got python version 3.4.2, then you must uninstall your current version of python (or don't if you don't even have python).
Step 2
Then download and install python 3.4.2 from http://filehippo.com/download_python/58901/ .
Step 3
Follow the instructions and wait until it is ready for use.
Step 4
Now download the 'pygame-1.9.2a0-cp34-none-win32.whl' file from http://www.lfd.uci.edu/~gohlke/pythonlibs/#pygame and copy it into C:\Python34\Scripts .
Step 5
In C:\Python34\Scripts hold the shift key and right click. Click on 'Open new command window here'.
Step 6
In the command window you have opened, type in:
pip3 install pygame-1.9.2a0-cp34-none-win32.whl
It will say something like:
Unpacking C:\Python34\Scripts\pygame-1.9.2a0-cp34-none-win32.whl
Installing collected packages: pygame
Successfully installed pygame
Cleaning up...
And it will then just say C:\Python34\Scripts>, which means that pygame has now been installed!
Step 7
Go to the Python 3.4.2 Shell, and type in:
import pygame
if there is an error, pygame didn't install properly, otherwise, congratulations!
You can then:
import pygame.examples.aliens as game
and then on the next line type in:
game.main()
to see a professional pygame example.
For more information, visit my website at:
https://ronaldobutrus.github.io/Site3/index.html
Good Luck! :)

https://bitbucket.org/pygame/pygame/downloads
"pygame-1.9.2a0-hg_5974ff8dae3c+.win32-py3.4.msi"
This is the package you want, RedNax said this but did not point out the exact package.

The other answer doesn't work for me on Windows 10 Pro N x64.
What did work was installing the win32.whl instead of amd64. I put this in my Python3.4\Scripts folder where pip is and ran
pip install pygame-1.9.2a0-cp34-none-win32.whl
This should work for others using a similar configuration.

In my experience, you need to make sure of two things:
1) Both Python and Pygame should be 32 bit - not either or both being 64 bit.
2) Both Python and Pygame should be compatible for the same version.
You may be able to get the 64 bit version to work, but not all packages have migrated to 64 bit and the small performance improvement isn't worth the frustration of trying to get it to work.
I also found the latest 32 bit Pygame (as of Feb. 5th, 2016) seems to work well with 32 bit Python 3.4.4.
I installed 32 bit python-3.4.4.msi on Windows 10 from my downloads folder to the folder C:\Python34.
Within the Python34 folder, I created a folder called "Project Directory".
In it, I placed "pygame-1.9.2a0-hg_ea3b3bb8714a.win32-py3.4.msi" which I think I got from https://bitbucket.org/pygame/pygame/downloads. Double-clicked on it. Worked the first time.
I had also installed "Microsoft Visual Studio Community 2015 with Update 1."
No idea if this helped solve the problem, but this MVSC package installs a lot of DLLs. It takes quite a while to get MVSC installed.
But - I now have Pygame working on Windows 10.

For linux if you root user then copy paste this into terminal
apt-get install python3-dev mercurial
apt-get install libsdl-image1.2-dev libsdl2-dev libsdl-ttf2.0-dev
apt-get install libsdl-mixer1.2-dev libportmidi-dev
apt-get install python-numpy
pip3 install --user hg+http://bitbucket.org/pygame/pygame
If you not root user then use sudo before start every-line.