Develop Reference

Why can't Python find the module I installed?

Presently I'm using Python on a Windows system. I installed Python 3.10 from Anaconda and also the Pycharm IDE. I have ensured that Python is in the correct path in the environment variable. I have also replicated this problem using two different versions of Python, 3.10 and 3.9.
Very simply, in PyCharm, I open a terminal and type
conda install -c numpy numpy.
Then, I write a new "main.py" script. I have one line: "import numpy". I receive the error:
Traceback (most recent call last):
File "C:\Users\---\PycharmProjects\pythonProject3\main.py", line 17, in <module>
import numpy
ModuleNotFoundError: No module named 'numpy'
What am I doing wrong?
Going on advice from a friend, I created a new PyCharm project sitting not in my user directory but on the C: drive, and got the same error. Finally, when trying to re-install the package using either using either pip or conda, I get this message:
# All requested packages already installed.

You have 2 versions of Python:
Default Python (used everytime you open your command prompt and type python or python3)
Anaconda is installing packages in a virtual environment, using it's own Python (it is located in a different path)
You can see the path of your installed python using python -c "import os, sys; print(os.path.dirname(sys.executable))"
You have 2 Options:
Configure the PyCharm in order to use the anaconda Python. https://www.jetbrains.com/help/pycharm/configuring-python-interpreter.html#view_list
Open a command prompt in the project's folder (you can do it easily using PyCharm). Type conda env list. This will show you all available anaconda virtual environments. Choose 1 of them and type conda activate <env_name>, where <env_name>=the name of the environment. Then, run your program using python <name_of_your_program>
You can see the paths where the anaconda environments and packages are installed using conda info

There main reason for this is
You are running your main.py in different environment rather than where you installed numpy.
If you trying to run it via cmd use this method
Check which environment you are in right now. refer this and
this. But the most easiest way to do this is use where command
in windows cmd. C:\> where python or C:\> where python3. You will
get the path of activated interpreter.
list conda envs - conda env list
activate conda env - conda activate <env name>
then run this command. pip freeze . and check is there numpy in
the list. If not you have to find and activate the environment where
you have installed numpy.
If you want to run it in pycharm
Refer this on how to change pycharm interpreter.
https://www.jetbrains.com/help/pycharm/configuring-python-interpreter.html

Many things can cause this, usually its one of these
You may have to restart your terminal, or IDE if running in there, after installing a package to "refresh" the environmental path
The package is not in the environmental path

PyGame cannot load a file when coverted with Autopytoexe [duplicate]

I have python 3.9 I used the command 'pip install auto-py-to-exe' and it downloaded but when I tried to using the command 'auto-py-to-exe' the program just said " 'auto-py-to-exe' is not recognized as an internal or external command, operable program or batch file.". I have the latest version of PIP and I also have PATH. What can I do to fix this?

This works on VSCode:
python -m auto_py_to_exe

If I install "auto-py-to-exe" using following command, as described in this link as well as from the comment from Justin Ezequiel (above):
python -m pip install auto-py-to-exe
I am able to run it (in Windows 10) using following command:
python -m auto_py_to_exe

This gave me quite a bit of trouble, as none of the above solutions worked for me. Spent lots of time trying to figure out what I should be adding to PATH with no success.
My issue stemmed from (I think) the fact that I have been using python downloaded from the windows store, which uses a different location to store python in.
With the manual install of python (https://www.python.org) you can specify where python is downloaded and automatically add that location to path.
Steps I took to solve the problem:
Uninstall all versions of python downloaded from the windows store via settings (settings > apps > python > uninstall)
Uninstall all version of python via the control panel (control panel > add or remove programs > python x.x.x > uninstall)
Uninstall auto-py-to-exe (pip uninstall auto-py-to-exe) in case it didnt do that automatically
Install python from python.org. (auto-py-to-exe is not supported in versions greater than 3.10 as of 1/23/2023). So I installed Python 3.10
The settings which were successful for me were:
Custom installation,
check install python for all users,
check add to path,
input 'C:\Python310' (with the respective version number) for install location,
install
Check new python version has been installed python --version
Check pip is installed pip --version
Install auto-py-to-exe pip install auto-py-to-exe
When auto-py-to-exe finishes installing, scroll up through the install info and make sure there are no warnings that state there is a location not found in PATH. If there are, you'll have to do some other research on adding those locations to PATH appropriately (since I don't think I was doing that right).
Assuming no PATH warnings,
9. Run auto-py-to-exe

First you need to type in the terminal (not Python):
auto-py-to-exe
If you are currently in python use exit() to exit then try the above code.

It Depends on in which environment you have installed
Make sure to replace {User} with your user
In Conda Enviournment go to below location Manually
C:\Users\{User}\anaconda3\Scripts\auto-py-to-exe.exe
In Pip, Environment go to the location below
C:\Users\{User}\AppData\Local\Programs\Python\Python37-32\Scripts\auto-py-to-exe.exe
or you can add this path to your environment variable as well for accessing these from anywhere

First check you installed it
pip install auto-py-to-exe
then restart your vscode and check another time.
If still an error, check it in CMD.

As suggested above use:
pip show --files auto-py-to-exe to find out in what directory pip has
installed the scripts. Double check the directory is in %PATH%
This will show you where the installer has placed the binary files. I then changed to that directory which circumvents any path issue. I tried to run the files and found :
OSError: [WinError 1920] The file cannot be accessed by the system: 'C:\\Users\\aaaa\\AppData\\Local\\Microsoft\\WindowsApps\\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\\python.exe'
PS C:\users\aaaa\appdata\local\packages\pythonsoftwarefoundation.python.3.7_qbz5n2kfra8p0\localcache\local-packages\python37\Scripts>
In my case, although I haven't worked out how to fix it yet... It would seem to be trying to refer to an incorrect Python executable, the files in that directory are all 0 length. Unfortunately the "python -m" suggestion didn't work for me, so it's back to the drawing board. Hope that helps you confirm if it's the right solution to chase down.

You need to make sure you have typed cd C:\Users\your_user_name\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\Scripts as a separate command, and then auto-py-to-exe with python 3. Check in file explorer to make sure your path is correct if the cd fails.

Can't figure out "unable to import [module]" in VSCode

I've recently swapped drives on my notebook and decided on a completely fresh install. When setting up VSCode for a new python project, I installed the latest version from python's website, added the appropriate environment variable to the path, removed the length cap for the pathname too, and all that.
python environment variable added to Path
But still, every time I import NumPy or any other module for that matter, it throws an error saying "unable to import [module]".
vscode error
I don't know what else to do, VSCode even recognizes the interpreter (see image 3).
python interpreter selected in vscode
Tried setting up a venv aswell, end up getting the same error.

This is how I normally set up a project and it always works.
(open directory in VSCode)
Within the VSCode Terminal
python3 -m venv .venv
source .venv/bin/activate
At this time vscode should automatically detect that there is a new virtualenv and ask you to use it.
If it doesn't you can use the CMD+Shift+P (CTRL+Shift+P) search for "Select Python Interpreter" and specify the path.

Did you install Numpy in the virtual environment (if you are using one)?
Try to list your installed packages in vscode terminal
python -m pip list
If numpy does not appear, install numpy with:
python -m pip install numpy
Does it work when you run the code? Or is this just a pylint problem?

I can't use pip (Windows)

I'm wanting to learn machine learning, but it requires that I use 'pip.' I'm still very new to a lot of this stuff. I've installed Python 3.4 64-bit and get-py.py.
When I run pip install sklearn I get 'pip' is not recognized as an internal or external command, operable program or batch file.
Here's a screenshot of my environmental variable PATH
https://gyazo.com/c7ec926401878845d5c4f9a556cf00ee
Any help would be greatly appreciated. I have checked out other posts where people had similar issues, but I tried various things and nothing worked.

Easiest solution is to just download a platform like Anaconda for example. It is Python with many libraries (sklearn, pandas, numpy, ...) and also with pip, all in a user-friendly Windows installer package, that takes care of everything for you.
https://www.continuum.io/downloads
If you really want to do it yourself, then
download get-pip.py (https://bootstrap.pypa.io/get-pip.py)
make sure you have Python installed and in your PATH, for example by running python --version in command prompt
Navigate to the directory, where you downloaded get-pip.py (in command prompt using the command cd).
Run the command python get-pip.py from a command prompt with admin privileges (possibly not needed, but just to make sure).
This should be all. Close your command prompt, open it again and run pip --version to test it. If it doesn't work, then search your computer for a file named pip.exe (most likely in your Python directory) and if you find it, add its path to your PATH variable (given the screenshot, I assume you know how to do this).

I downloaded Python 3.6 and the pip was installed on my system.
I found pip at below location:
C:\Users\Admin\AppData\Local\Programs\Python\Python36\Scripts
Also, before I found pip I used below command on my command prompt to install pyperclip:
python -m pip install pyperclip

For anyone that might have installed Python using the MSI installer, and ticked the box to include pip, but still gets the error 'pip' is not recognized as an internal or external command, operable program or batch file:
It looks like that the pip executable is installed in the \Scripts subdirectory of the Python installation, but that directory does not get automatically added to PATH.
For me, since I had installed Python 2.7, the directory was C:\Python27\Scripts. After adding this path to the PATH environment variable, and open a new CMD window, pip was available as a command.

I've made a workaround that will help you, copy the batch script below and modify it as specified:
#"PATH to python.exe" "PATH to pip.exe" %*
For example like this:
#"C:\programming\bin\python374\python.exe" "C:\programming\bin\python374\Scripts\pip.exe" %*
Save this file as pip.bat on Desktop and then move it to C:\Windows\system32.

For Python 3.7 or higher at least (as today is October 4th 2019) in the installation window you need to check the box "add to PATH" when you first install Python.

I'm late now, but just add python to your environment variables.
It´s explained in this short video, how to set up python to your environment variables:
https://www.youtube.com/watch?v=Y2q_b4ugPWk
after that pip should work on your cmd prompt, without cd to
"C:\Users\Admin\AppData\Local\Programs\Python\Python36\Scripts"

This is late but in case anyone runs across this issue, pip installed for me as "pip3". Once I used pip3 as my command and not pip, it worked fine. Threw me for quite a loop since I've been using Python for years.

PIP Install and Upgrade
Ensure you are accessing the right location while accessing pip as shown in my link above. Starting Python 3.4, it is included by default with the Python binary installers.
Environment Variable
It is also a good idea to update the environment variable if the path is not accessible by default, once the installation is complete.

If it is specifically pip you want you could install python again making sure to tick the install pip box which it sounds like you failed to upon initial installation.

Anaconda3 2.4 with python 3.5 installation error (procedure entry not found; Windows 10)

I have just made up my mind to change from python 2.7 to python 3.5 and therefore tried to reinstall Anaconda (64 bit) with the 3.5 environment. When I try to install the package I get several errors in the form of (translation from German, so maybe not exact):
The procedure entry "__telemetry_main_return_trigger" could not be found in the DLL "C:\Anaconda3\pythonw.exe".
and
The procedure entry "__telemetry_main_invoke_trigger" could not be found in the DLL "C:\Anaconda3\python35.dll".
The title of the second error message box still points to pythonw.exe. Both errors appear several times - every time an extraction was completed. The installation progress box reads
[...]
extraction complete.
Execute: "C:\Anaconda3\pythonw.exe" "C:\Anaconda3\Lib_nsis.py" postpkg
After torturing myself through the installation I get the warning
Failed to create Anaconda menus
If I ignore it once gives me my lovely error messages and tells me that
Failed to initialize Anaconda directories
then
Failed to add Anaconda to the system PATH
Of course nothing works, if I dare to use this mess it installs. What might go wrong? On other computers with Windows 10 it works well.
P.S.: An installation of Anaconda2 2.4 with python 2.7 works without any error message, but still is not able to be used (other errors).

Finally I have found the reason. So, if anybody else has this problem:
Here the entry points are an issue as well and Michael Sarahan gives the solution. Install the Visual C++ Redistributable for Visual Studio 2015, which is used by the new version of python, first. After that install the Anaconda-package and it should work like a charm.

You can also use your standard Anaconda installation and just create an environment based on 2.7 / 3.4 etc... Anaconda will download and install all compatible packages from the repository so you have a complete installation.
conda create -n py27 python=2.7 anaconda
conda create -n py34 python=3.4 anaconda
To use the new environment (in Windows), you can point your IDE to the required environment folder:
C:\Anaconda3\envs\py34\python.exe
On the Windows command line, you just need to type:
activate py34
Documentation:
http://conda.pydata.org/docs/py2or3.html
My recommendation would be to reinstall your Anaconda version with Python 2.7 that you previously had working, then just add a new environment for Python 3.x and use that as you need.

I had the same problem, then I Installed "for all users": solved.
Much easier than the links provided for a beginner as I am.

For the problem "Failed to create Anaconda menus", it may because:
This might happen if PATH is too long already. How long is your PATH environment variable? Windows limits this to 1024 characters. There are some workarounds go shorten it here: How do you avoid over-populating the PATH Environment Variable in Windows?
This is other people's question and solution
https://groups.google.com/a/continuum.io/forum/#!topic/anaconda/mjrbE6rKyi8
When I shorted the environment path, it works!

If you are getting errors like:
Failed to create Anaconda menus
Failed to initialize Anaconda directories
Failed to add Anaconda to the system PATH
just ignore them while installation and when installation is done look for the directory "anaconda3" is installed and correct the path accordingly in environment variables path.
In my system, path was set "C:\Anaconda3" but actually it was installed at "C:\ProgramData\Anaconda3". You have to change all 3 path entries for anaconda3 and then try to run "jupyter notebook" in CMD.

If you are using windows, launch the command prompt as administrator and execute the following commands
"C:\ProgramData\Anaconda3\pythonw.exe" -E -s "C:\ProgramData\Anaconda3\Lib_nsis.py" addpath
"C:\ProgramData\Anaconda3\pythonw.exe" -E -s "C:\ProgramData\Anaconda3\Lib_nsis.py" mkdirs
"C:\ProgramData\Anaconda3\pythonw.exe" -E -s "C:\ProgramData\Anaconda3\Lib_nsis.py" mkmenus
Don't forget to change the path to the path in your system. Before running this commands there will not be any Anaconda Navigator app in your start menu. After executing this commands make sure Anaconda Navigator app is available in the start menu.

Change the directory. It works
C:\miniconda3