Develop Reference

How do I install python package tobii_research?

I am trying to install tobii_research for a project and I was following the instructions on http://developer.tobiipro.com/python/python-getting-started.html
I already have python 3.7.6 and pip 21.1.2 installed on my Mac.
When I run pip install tobii-research I get:
ERROR: Could not find a version that satisfies the requirement tobii_research (from versions: none)
ERROR: No matching distribution found for tobii-research
Was there something I forgot to install?
I can not for the life of me figure out how to install this manually either.
Help with pip, or installing manually would be greatly appreciated, but you might have to explain it to me like I am stupid.
Thanks in advance.

It appears that you are not running the correct python version for the versions of the package that are available. If you look at the wheel files available on the tobii-research Downloads page, the software is packaged for either python 2.7 or 3.6.
When trying to install this package myself, I get the same error message as you when trying to install it for python 3.8, but the package installs successfully with my python 2.7 installation.
I would recommend installing a compatible version of python and then running pip through that version using the following command:
[specific_python_installation] -m pip install tobii-research

Try doing it with pip again, but replace the underscore with a hyphen as shown below:
pip install tobii-research

I saw on the PyPi website that they only have it for Python 3.8, so I downloaded that Python version from their official website and installed it (do not add it to path).
Then, I created a virtual environment selecting 3.8 as the Python version (refer to this answer) and activated that virtual environment.
Finally, I run pip install tobii_research and it worked.

One thing that helped me - required Python version. For example, for the version 1.10.2 (which is current at the moment of writing this) only Python 3.10 is supported. Check the list of files distributed within this version.
I was able to install the package on Windows with Python 3.10 but on MacOS I had the same problem and wasn't able to resolve this - I assume it's a problem with the architecture, as there is no version for arm64 if you have a Mac with M1 processor.

Why does it continue to say that the whl file is not supported on this platform?

I'm attempting to set up pygame on another computer, but it continues to say that my wheel is not supported.
I've downloaded and upgraded my wheel and the pip install function, and I also am running python 3.7.4, please help me.
This is what it says:
ERROR: pygame-1.9.6-cp37-cp37m-win_amd64.whl is not a supported wheel on this platform.

Maybe you are using a 32 bit Python on a 64 bit Windows.
determine-if-my-python-shell-is-executing-in-32bit-or-64bit-mode-on-os
Installing the following file solved the issue: install this package
pip install pygame-1.9.6-cp37-cp37m-win32.whl

Pygame for Python 3.5.1 (Nothing I've tried has worked)

I've been trying to install pygame for Python 3.5.1 on Windows 10, 64 bit. Everything I've attempted so far has resulted in an error message in some form.
My latest attempt has been when I downloaded pygame-1.9.2a0-cp35-none-win_amd64.whl (also tried the 32-bit, got same error) from http://www.lfd.uci.edu/~gohlke/pythonlibs/#pygame and dragged the .whl file into Python35-32/Scripts. I then proceeded to go to command prompt and do the pip install thing, to which I got this message:
"Could not find a version that satisfies the requirement pygame-1.9.2a0-cp35-none-win_amd64 (from versions: )
No matching distribution found for pygame pygame-1.9.2a0-cp35-none-win_amd64"
I am aware that I may be installing it incorrectly, but from my understanding of other guides, this is what they say to have done. I would greatly appreciate help if possible.

It sounds like you've left the file extension off of the filename when you're calling pip install. Make sure you include the .whl extension, of pip will think the file name is the name of a package it should be downloading for you.

Pygame is not compatible with python 3.5. But it is with python 3.4. You can find binaries at: https://bitbucket.org/pygame/pygame/downloads
For previous version of python: https://www.python.org/downloads/

The first thing to check is that you have the 64 bit version of Python (the default windows download is 32bit). If not, here's the link:
https://www.python.org/downloads/release/python-360/
When you have the 64 bit python going, From the command prompt / Powershell, use "pip install pygame" or "python -m pip install pygame" then you will be sure the os, python, and pygame are all 64bit, mixing and matching doesn't work.

How to install lxml in Python 3.4 on Windows machine

I've been spending hours on this. I'm new to Python and can't see what the solution may be.
I have Python 3.4 and want to work with .docx, which requires lxml.
The workflow I've done so far is: I go to the Python lxml package installer page, but it's quite confusing to know which version I need. I tried with several of them that contained the 34 numbers, both .exe and .tar. I also tried pip install lxml3.4.4 and pip install lxml 3.4.4. None of them worked either.
This is what the command prompt says when I did pip install lxml (it automatically grabs the lxml 3.4.4 I've downloaded and then prints what you can see in the screenshot):
What am I doing wrong and what can I do to repair it? And/or what exact version of lxml do I need to install from where? I am really discouraged that this is so difficult. Thanks

As said at the lxml homepage, it happened to you:
If you fail to build lxml on your MS Windows system from the signed and tested sources that we release, consider using the binary builds from PyPI or the unofficial Windows binaries that Christoph Gohlke generously provides.
So you have to download the right wheel file from Unofficial Windows Binaries for Python Extension Packages.
Step 1: Download appropriate version
Depending on your machine you have to download the wheel file lxml‑3.4.4‑cp34‑none‑win32.whl or lxml‑3.4.4‑cp34‑none‑win_amd64.whl, because you want the version for Python3.4 (that's the 34 in cp34).
Step 2: Open cmd and navigate to the download folder
I have chosen to open the cmd in administrator mode. But this is probably not necessary for you.
Step 3: Install wheel file with pip
Now you have to install the unofficial wheel file with pip. Maybe you can do pip install pip --upgrade before you install the wheel file. But this is probably also not necessary for you. To do the installation, just type pip install <downloaded_file>.
Or as cgohlke mentioned in his comment to your question: If you can't do pip install in cmd directly, this is what you can try: C:\Python34\python.exe -m pip install <downloaded_file>. You have to edit the path if Python3.4 is installed elsewhere, of course.
Don't panic. If you try to install the wrong downloaded file (e. g. win32 instead of amd64), it shouldn't break anything. An error message should occur: <package name> is not a supported wheel on this platform.

Installing Pocketsphinx with pip on Windows 7

I'm trying to install pocketsphinx on Windows 7 for Python 2.7. I found this https://github.com/bambocher/pocketsphinx-python, installed the dependencies, ran pip install pocketsphinx, which resulted in the "Successfully installed pocketsphinx-0.0.5" message, but when I attempt to run python file which contains import pocketsphinx I get an import error, "no module named pocketsphinx." Any idea what the problem could be?

Windows Solution
Christoph Gohlke kindly added a compiled version of pocketsphinx to his unofficial extension library.
If you are running Python 2.7 (32-bit) then download: "pocketsphinx-0.0.9-cp27-cp27m-win32.whl"
Here: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pocketsphinx
Then run: pip install "pocketsphinx-0.0.9-cp27-cp27m-win32.whl"

The location you found is not well supported and has bugs. This particular one does not properly install __init__.py, that's why you can not load the module. I suggest you to build the official one instead, it should work:
http://github.com/cmusphinx/pocketsphinx-python