I was trying to download a GUI, but the terminal kept giving me this error:
Python was not found; run without arguments to install from the Microsoft Store, or disable this shortcut from Settings > Manage App Execution Aliases.
I'm trying to install it using this command:
python -m pip install --upgrade pip setuptools virtualenv
Check your Python version and be sure it is installed on your machine
Check the path environment variable
Go to -> "start" and type "Manage App Execution Aliases". Go to it and turn off "Python"
I was having the same issue and I fixed it by using the below method.
Copy two paths of Python
C:\Users\Maninder\AppData\Local\Programs\Python\Python39
C:\Users\Maninder\AppData\Local\Programs\Python\Python39\Scripts
These are the paths where your Python interpreter is installed. Now add this path into your environmental
variable. Put this path into System variable, not in user variable. I was using user variable, so I was facing the issue.
I have a solution for you. Make sure you check the path mark during installation. Then you need to go to Manage App Execution Aliases.
Simply go to your search bar and search for Manage App Execution Aliases. You will find the attached screen and you need to turn off App Installers as you see on the screen. Also, see the path,,, follow Maninder's answer.
Then you are good to go! :)
I had the same issue. In Windows CMD, only: py --version, works.
I tried adding the path on System variables, and it didn't work. If you are using PyCharm as I do, try to run all commands from the IDE's terminal. It usually is on the side bar where the Run and the Console is. If it is not, go to: menu View → Tool Windows → Terminal. It worked just fine for me.
You need to download Python from https://python.org. When in the installation, be sure to check the option that adds Python to PATH.
I haven't gotten this error before and have been using Python a long time, and then suddenly it showed up. I think that it is a result of a Windows update designed to steer you to their store.
In any case: to remedy the problem, go to Settings → app execution aliases → and turn "off" Python. (What they tell you to do, in other words). This should resolve the problem.
If you have installed Python successfully with add python path, ticked on, and have added
C:\Users\<user>\AppData\Local\Programs\Python\Python39
C:\Users\<user>\AppData\Local\Programs\Python\Python39\Scripts
to the path into System variables and have turned off the "aliases" and they all didn't work, you can simply use python instead of python3 in your cmd command.
Check the Aliases for App Execution in Windows. Search for Alias App in your Windows toolbar to find the UI for this. Try turning off anything Python related.
Try adding the following to your "Path" environment variable:
C:\Users\Default\AppData\Local\Programs\Python\Python37
C:\Users\Default\AppData\Local\Programs\Python\Python37\Scripts
Replace Python37 with your own version.
I solved this problem for Visual Studio Code with just writing "python" in the console:
python
After that, Microsoft Store opens automatically with the Python app:
And I just click Get.
And it all work!
All the previous answers are correct, but in my case, I was getting this, because I was not passing the version...
The fix is passing the version:
py.exe -3 your_program
If you're on Windows, you may want to use the Python installer, in Windows Marketplace.
I faced the same error while using Anaconda and trying to link the Python executable path in the command prompt.
It got rectified by going to Settings → App execution aliases → and turning "off" Python. Then again I had to set the path for Python in Anaconda and was successful in executing "python --version" command.
The same thing happened to me even after trying all the above-mentioned steps.
I just restart my system and it was working fine. Do it and if still doesn't fix the issue then make sure you have checked "add python ( any version ) to PATH" before installing Python.
If none of the previous answers are working, you can check if you have the Python executable in your program files.
Go to C:\Program Files and check if you have the Python application. If not, go to the python download website here and download the .exe file.
While installing you must select "Custom install" and select the location as C:/Program Files.
Install it and it should work now from anywhere. This worked for me!
To sincerely resolve this issue, do the following:
Uninstall the Python instance and reinstall it. Note: Make sure you check
"Add variable PATH".
On the command line, type:
python -m pip install --upgrade pip setuptools virtualenv
I got this issue when I used Visual Studio Code as the IDE, and Anaconda as my Python compiler. And you don't need to close the "app alias" in settings, but copy your python.exe to python3.exe in your Anaconda folder.
That happened to me. So, to fix it, you have to follow the following steps:
Uninstall the Python version you already installed.
Go ahead and open the installation file to reinstall it again.
Before hitting Install Now, make sure to tick the box in front of Add Python to path.
Go ahead and complete the installation procedure as usual.
Steps for installing Python
The problem is more subtle than it seems.
For example, if you are using Visual Studio Code on the bottom left, you should see Python X.X.X xx-bit (the X is the version).
If you click in there you will see where the IDE is getting the python.exe from.
Locate that folder into your file explorer and then just follow the answer that is saying to change the environments variables.
So copy the path where python.exe is and add it to the Path variable and do the same where the Script folder is (it is in the same directory where the python.exe is).
Then of course make sure your IDE is using the right Python.
None of the answers here worked for me. I did this and the error went away.
For Windows 11 which I was using, I reran the python-3.10.5-amd64.exe file from my downloads directory and then chose to modify the installation.
Then I followed these easy steps.
Make sure the PIP component is checked before proceeding to install.
Then check 'Add Python to environment variables' if it's not checked already.
Proceed to Install.
At this point, your error will be solved
If you already have the Python executable on your machine and you are getting this error in Windows 10, search for the Python executable and copy its path then copy the path in system variables. It worked for me.
to check in windows
py --version
or restart your pc first then put htis command again
I tried to upgrade python version. It didn't work so I uninstalled python from my system. Deleted from Path and re-installed it. Ever since the reinstall
python -V
doesn't work. I have set the path manually and didn't work. Uninstalled and tried again, this time checked the tick-box that says add python to path.
No matter what I do can't seem to get the commands working.
As like the picture I get nothing. The version or anything else.
How am I to fix this problem?
Reason for the behaviour
Your system is using wrong python.exe. (not the one you installed, but one coming with Windows)
How to fix this?
It's completely ok to keep the C:/Users/<user>/AppData/Local/Microsoft/WindowsApps on you PATH, but make sure that your python installation folder (folder with python.exe) is in your PATH above the C:/Users/<user>/AppData/Local/Microsoft/WindowsApps, because the PATH is checked in order from top to bottom (or left to right).
To edit the environment variables, use Win -> type "envir" to the search -> Edit environment variables for your account -> Environment Variables... -> Select from the top list (user list) the "Path" and press "Edit...".
Notes
You can check what python.exe your command is using in Powershell with Get-Command python.
You probably want to also include the /Scripts folder of your python installation to the PATH. (there are common tools like pip.exe, and any .exe coming from a package, such as ipython.exe)
This problem happens because there is a default python.exein newer Windows 10 versions. See: Who put Python in the Windows 10 May 2019 Update?
The Process PATH is not updated if you edit the User or System PATH; you need to restart the Powershell to make the changes visible. If you use terminal of an IDE, you need to close all windows for the process once.
Delete the file c:/Users/<user>/AppData/Local/Microsoft/WindowsApps/python.exe
I'm working with VSCode on an Ubuntu 18.04 machine. Everything is fine except that I can't get back to the previous command in Python Interactive Window via Arrow Up. It works in the integrated terminal though, integrated shell is /bin/bash.
I have no idea where this is coming from. I changed "keyboard.dispatch" to "keyCode", but that's not the problem. I also tried different versions of the python-extension.
Do you have any idea?
Thanks!
Not sure if this is helpful for you as an Ubuntu user, but I came across the same problem in Windows this week. In my case, the issue cropped up after I installed the Python extension in VS Code (or at least I didn't notice the issue before this). The combination of using the Python extension, Git Bash for terminal, and python virtual environment killed the up arrow feature for me. Using python outside a virtual environment works fine. My solution was to use Command Prompt as the terminal when I wanted to use a virtual environment interactively.
In my situation, although I delete all the shortcuts of UpArrow, I still can get the previous command through UpArrow in Python interactive. This means there's no way to configure this shortcut, it was built in the plugin which built in Python extension.
So it's some problem with your Python extension, but you said you have tried to install a different version of Python extension but still not work. Make sure you have deleted it completely -> delete the extension folder manually(it's under C:\Users[UserName].vscode\extensions\ms-python.python-xxx).
I'm new to using Anaconda and Spyder and this must be a simple setting issue, but it's really frustrating. I need to have a PythonPath environment set because I frequently run scripts in ArcGIS which won't work without a path. However, neither Anaconda Navigator nor Spyder will not open if there is a PythonPath set. I get the splash screen, but that's it, it doesn't open. If I remove the PythonPath and reboot, Anaconda and Spyder work, but not ArcGIS. This is not an ArcGIS problem, rather Anaconda and Spyder just don't seem to like there being a PythonPath at all. Anyone have experience with this?
For reference, my PythonPath contains:
C:\Python27;
C:\Python27\Lib;
C:\Python27\Lib\site-packages;
C:\Python27\DLLs;
C:\Python27\Lib\lib-tk;
C:\Python27\scripts;
C:\Python27\ArcGIS10.3\Lib;
C:\Python27\ArcGIS10.3\Lib\lib-tk;
C:\Python27\ArcGIS10.3\Lib\site-packages;
C:\Program Files (x86)\ArcGIS\Desktop10.3\arcpy;
C:\Program Files (x86)\ArcGIS\Desktop10.3\bin
I can remove everything except the bottom five and ArcGIS scripts still work, but it doesn't fix the problem with Spyder. It probably has something to do with the files not actually being executables, but links to scripts. For example, the shortcut for Spyder points to:
C:\ProgramData\Anaconda2\pythonw.exe C:\ProgramData\Anaconda2\cwp.py
C:\ProgramData\Anaconda2 "C:/ProgramData/Anaconda2/pythonw.exe"
"C:/ProgramData/Anaconda2/Scripts/spyder-script.py"
which seems to leave a lot of room for trouble. Interestingly, if I run from the Command Prompt, the first time there are no errors but nothing happens, and the second time it displays:
Spyder is already running. If you want to open a new instance, please
pass to it the --new-instance option
I don't know that I can directly offer a fix, but a nice workaround is spyder's PYTHONPATH manager inside the program. If you open up spyder you should be able to locate the pythonpath manager (on a mac it is under "python" tab) and manually add the necessary paths.
You seem to have relic python installation kicking around and it wasn't uninstalled prior to installing ArcMap. The correct path structure for a clean installation of ArcMap with its associated python would consist of
C:\Python27\ArcGISxx.x
and there are no other files or folders in the C:\Python27 path.
I would suggest uninstalling python completely and do a 'repair' of the arcmap distribution which will reinstall python and its dependencies correctly.
In the interim, you should move the last 3 lines (which refer to arcmap) to the top of the dependency list. That may resolve things temporarily.
I seem to have problem launching python from command line. I tried various things with no success.
Problem: When trying to run python from the command line, there is no response i.e. I do not get message about 'command not found' and console does not launch. Only option to open python console is to run C:\Python34\python.exe directly. Running using python command does not work even when in the python directory but python.exe launches. Issue with the launching this way is that python console is launched in new window. This whole problem is present only on one machine while on my other machine I am able to run python correctly and console launches in the command prompt window from which the python command was executed.
PATH is correctly set to
C:\Python34\;C:\Python34\Scripts;...
and where python correctly returns C:\Python34\python.exe. I verified that running other commands imported through PATH (such as javac) run correctly.
Things I tried:
Completely re-installing python both with x86 and x64 python installations with no success.
Copy installation from my second machine and manually set the path variables - again no success.
Can anyone hint how to resolve this behavior?
(Additional info: Win 8.1 x64, python 3.4.2)
Issue resolved. Since no feasible solution was found in 2 days, I decided to wipe all keys containing 'python' from registry as well as some files that were not parts of other programs. This resolved the issue after re-installing python.
If anyone finds the true cause of this misbehavior and other - less brutal - solution, please write it here for future reference.
Recent Python installer has option to add PATH.
If you didn't use it, you can register directory where python.exe is to PATH environment variable.
But I prefer py launcher. It may be installed via Python 3.3 or 3.4.
With it, you can start Python via py or py -3.4.
See https://docs.python.org/3/using/windows.html#python-launcher-for-windows