I have accidentally removed several parts of python and now am trying to start again... The installer says that 57 files are still on my PC and I cannot find them. Does anyone know how to get a copy of the uninstaller? As it should find the remaining files.
This depends on the OS and how Python was installed.
For windows, look under %USERPROFILE%\AppData\Local\Programs\Python - or just run the installer again, it should have an option to fix or remove the current install.
Related
I was trying to install selenium on my computer, the tutorial I was following required me to have pip in my path.
This lead to a rabbit hole.
When I try to find out the path to my python, there were hundreds of files with the word python in them. It also appears that I have several versions, one mine, one came with anaconda when I needed Jupiter notebooks and one on my husbands user account for his PLC projects.
How do I find out which version I need to use to add pip to my path? What will mark that file as the one?
I tried to use there where command, but whatever is at this location is not correct, the file size is zero.
I think I know how to add items to my path, but my issue seems to be that I can not find the location of my python version.
when i attempt to check the version in CMD I get this error:
C:\Users\Adison>python --version
Python was not found; run without arguments to install from the Microsoft Store, or disable this shortcut from Settings > Manage App Execution Aliases.
I tried to turn off the app installer in Manage App Execution Aliases...but it doesn't seem to do anything and appears to be switched back on immediately.
I want to get pip on my environment variables path. But my question is: (I think)
How do I isolate my python version/ find its location so I can add it to my path?
side note: I stalled Selenium direct from inside PYCHARM. Going to go forward for now with Selenium, and hope I can resolve this mess later. :) Thanks for any help.
I recently uninstalled and reinstalled python, and i have not been able to save one of my programs since.
When i hit ctrl+S, IDLE throws me a window saying I/O Error: Bad file descriptor. I can not even save my file!
As it turns out i don't think it has anything to do with the actual code. No matter what is in the program, it still throws this error when i try to save, unless there is no code whatsoever!
IF anyone knows why this error is occurring, please tell me or post an updated version of the code, any help is appreciated
I am using Windows 10, Python 3.7.3 64-bit [a couple days ago i uninstalled (just through windows settings) 32-bit and installed 64 from the python website]
I have experienced the same issue.
In my case the Windows 10 Defender was the root cause.
I added in Windows Defender Ransomware Protection the python.exe of my used IDE and the issue disappears.
In Windows, it is theorically possible to install 32 bits and 64 bits versions of Python side by side, and it should work with a genuine installation. But dragons are waiting around:
it is possible to have shortcuts pointing to a wrong location.
if the PATH has been changed to allow direct usage of the python, or pip command from the command line, risk is that you use the wrong tool
if any Python environment variable has been set, problems are almost guaranteed
Furthermore, Python can be installed either for the current user or for all users, which adds more possibilities for inconsistancies.
Once an installation is deemed broken, uninstalling one of the versions is generally useless on can even cause more problems. Long story short, if you have entered the world of inconsistancy, you must clean up everything.
My advice here is:
find where the Python versions were installed and note it
find if additional tools (py) have been installed and try to find which ones
uninstall every Python version
control that the installation paths are empty
search the environment and PATH for any Python related information and remove them
When everything looks good, reinstall from the installation wizard.
Hopefully it should work. If it does not I cannot help: despite being presented as an end user friendly system, Windows is a very feature rich and complex OS and trying to fully analyze a Windows system is beyond the capacity of most users, including most power users and sysadmins. At a point, the only possibility left is to reinstall the full OS and then cleanly install everything back... when it is possible...
I've been going with a basic Python3.4 install that I've been installing many modules into for over the past month but have reached a point where pip is coming up short and I'm going to just install the full Anaconda on my system to go deeper into bokeh-server stuff.
I get a popup during the Windows 64bit installer (Anaconda3-2.3.0-Windows-x86_64.exe) saying
A version of Python 3.4 (64-bit) is already at C:\Python34\ We
recommend that if you want Anaconda registered as your system Python,
you unregister this Python first. If you really know this is what you
want, click OK, otherwise click cancel to continue.
Didn't find much documentation on this subject, and I'm not really sure how to "unregister" that installation of Python apart from uninstalling it entirely from Windows which I imagine would accomplish such a thing. Is this basically telling me to check how my Python Launcher for Windows is setup after the Anaconda installation? I'm completely unfamiliar with this notion of python system registration? Is that just a round about warning about which python version takes precedence on the system path, or which installation holds the file associations?
The solution is simply to uninstall python (for example, run the original python installer and select the uninstall option). The python key in the windows registry will be removed (which is what unregister means in this context).
Here is a link to a script that will unregister a Python installation (if you haven't come across it already). I personally have not dealt with anything like this. It seems like it should work, but you may have to tinker around with some of the paths in the script to get things to work. The links in #nightuser 's post will also probably fix the issue.
Why not just remove your version of Python? You could do a pip freeze > requirements.txt with your current Python and add them to Anaconda, or create an environment with Anaconda using those packages. Anaconda has greatly decreased the amount of time I spend setting things up.
You are getting that prompt because you have another version already installed the safe way to do this is going to the directory of the existing version and running the uninstaller. Once the previous version is completely uninstalled. You can run the installation as normal it should works!
enter image description hereYou have already installed python in your environment, so your system can handle your python code. Anaconda can handle your python code as well. If you install Anaconda and expect use python provided by Anaconda, then your system will confuse about assigning the code job. To avoid this confusion, there is always a path to point out which python you want.
You can ask your OS to find specific python by changing your environment path in windows OS:
By deleting the python path your Python will be invisible. Changing path is more convenient compared with the uninstall.
If you got a python compiling software like Pycharm, things are different. Pycharm may have python3.6 while your system got python 3.5. You need to delete path in those software or uninstall python specified by those software.
Pycharm
Actually, instead of registering the Anaconda as the system python, you can install it first, then specify your Pycharm and system path to the Anaconda python path. Thus, your Pycharm will use python provided by Anaconda and package & virtual environment you need.
I edit this for lots of times because I got Great wall, so I can't close something pop up in my screen(cause it is Blank). And everything is missing if I refresh. This is annoying.
My system path Anaconda3's python36
Add path in Pycharm
Or you can't use these packages and Anacon's virtual Environment
As described in: http://bugs.python.org/issue22139, the python27.dll is installed in the windows systems (in my case C:\Windows\Systems32) folder.
But I would like to know why? Why is it not installed next to the python.exe, for example in C:\Python27\?
Reason I ask: I've made a mercurial hook in python that our developers need to use to check if the commit message is valid. It checks a.o. for a valid JIRA issue number. To prevent all our developers to install python themselves and install the required modules manually (a lot of work and errorprone), I zipped the python installation and asked the developers to unzip it locally. But they can't run it, because the python27.dll is missing, or worse, they already have another minor version of python installed, and the hook will fail due to the wrong python27.dll used. Confusing.
If I just add the python27.dll (the correct version) to the zip file, it all seems to work great. So, why is it not installed in that location in the first place? What is the advantage of installing it in C:\Windows\System32?
Hope someone can explain this to me!
Thanks in advance,
Tallandtree.
I use the Anaconda Python distribution from http://continuum.io. They put python27.dll into c:\anaconda right next to its python.exe. This distribution is also superior in that you can have multiple python environments with precisely the packages you need and switch between them easily (http://conda.pydata.org/docs/using/envs.html). You can also get the package list of one of your environments and distribute it to others.
I recommend this Python distribution over the one from python.org and Enthought, because of this issue.
.dlls are quite windows-specific files. I imagine you will have shared object (.so) files for LINUX/UNIX-specific Python stuff? You said your developer's couldn't run it, because they didn't have the correct DLL (i.e. the one relevant to their Python installation).
Also, the advantage of installing it to System32 is that it's in the default PATH. Additionally, if any other application is internally using Python and require access to the .dll file, and also NOT reference your Python directory, they will probably be looking for a location that "Actually" exists (I wanted to say guaranteed to exist, but......never mind). That location would be `C:/windows/Systems32'.
I found it to work just fine to put python27.dll in the Python directory (c:\Python27 or wherever). As long as it's in the PATH, it seems to work. I did this for a "relocatable" installation of Python. I can copy the installation directory to a Windows machine that has no Python installed, set the PATH to include that directory, and run Python, including all the libraries I had installed with pip install on the original machine.
How would I do this? The reason being I wanted to try some pygame out, but I have python 3 installed currently and have been learning with that. I'm also interested in trying out wxpython or something like that, but I haven't looked at their compatibilities yet.
EDIT:: im on a windows vista 64-bit
If you are on Windows, then just install another version of Python using the installer. It would be installed into another directory.
Then if you install other packages using the installer, it would ask you for which python installation to apply. If you use installation from source or easy_install, then just make sure that when you install, you are using the one of the proper version.
If you have many packages installed in your current python-3, then just make a zip backup of your current installation just in case.
Erm... yes. I just installed Python 3.0 on this computer to test it. You haven't specified your operating system, but I'm running Ubuntu 9.04 and I can explicitly specify the version of Python I want to run by typing python2.5 myscript.py or python3.0 myscript.py, depending on my needs.
Typically python is installed with a name like python2.6, so you can have more than one. There may be a symlink from python to one of the numbered files. Quite workable.
Yes, it is possible.
I maintain 3 python installations (2.5, 2.6, 3.0). The only issue that could be confusing is figuring out which Python version takes precedence in PATH variable (if any) . To execute a script for a specific version, you would go into the python directory for that version
C:\Python25\ , C:\Python26\, C:\Python30\, etc.
Drop the file in there, and run "python.exe file.py" from command-line.
You could even rename each python.exe to python25.exe python26.exe python30.exe and have each directory in PATH so it would be easy to execute any script on any version.
I would assume it'd be the same as running two versions of 2.x; as long as they're each in their own directory you should be OK.
You certainly can. On Mac Ports, there's a tool called python_select that lets you switch among python versions; if nothing like it exists on Windows (momentary googling didn't reveal one), it could certainly be written.
You can set up virtual python environments using virtualenv.