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Can existing virtualenv be upgraded gracefully?
(6 answers)
Closed 2 years ago.
Is it possible to set a specific interpreter (Python 3.7 or Python3.8) without using any IDE but only using command line commands?
I know that is possible using Pycharm, Anaconda or other else, but I would know the command.
Thanks and good day
If you use conda or mini conda, you can set up separate virtual environment with the benefit of selecting a different interpreter version and different packages. I suggest you familiarise yourself with conda and miniconda, and how to start an environment, run scripts etc from terminal with their guides. Resources below:
https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html
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This question already has answers here:
Using both Python 2.x and Python 3.x in IPython Notebook
(11 answers)
Closed 1 year ago.
I have python3 in my jupyter notebook but I want to make it for python2 as well. How can I install for both versions?
Jupyter will launch with the python version that is installed on the environment you're working in.
If you want to use multiple versions of python, you can use an environment management system like Conda to create different environments with different versions of python.
Miniconda is a light version of conda that you could use to get what you want.
First click to kernel tab, then a dropdown menu will show up. Click change kernel and select python 2. If python 2 didn't show up check out this:
How to change jupyter kernel from Python 2 to python 3?
You can make it reverse.
This question already has answers here:
python3 -m venv: how to specify Python point release/version?
(3 answers)
Closed 2 years ago.
As answered here, virtualenv has -p and --python flags that allow user to define python interpreter desired version to be used in the to-be-created virtual environment
Reading up venv official doc, I haven't found such an option described. So I'm look for an alternative to achieve same behavior. Some guess?
Try running: py -3.8 -m venv virtualenv. This is the method I’ve been using which does create a virtual environment in the corresponding Python version. There may be other methods, however. Naturally, replace py3.8 with whoever version you want to use.
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CMD opens Windows Store when I type 'python'
(12 answers)
Closed 2 years ago.
I have a bit of a oddity going on I can't figure out why it's happening. I've installed the latest version of Python for Windows (3.8.5 64-bit), after removing the previous version, and the version which comes with Visual Studio as part of the Python development package in that IDE. Python installed fine, and also added the Environment variables which I activated in the installer. Now I opened the PowerShell to start the Python interpreter as I've done so often before, typed in python, and Windows 10 opened up the Windows store to suggest to install Python from the store... so, I made sure another time that Python installed the environment variables which it did.
I uninstalled and re-installed Python several times then, also rebooting the computer a few times inbetween, to make sure it could read the changed environment variables. No luck. After browsing the net for some times, I came across a post here which suggested to start the interpreter via the "py" command. Et voilá, it works...
Did they change something in one of the latest versions of Python in regards of the command to start the interpreter? I frankly have no idea what is going on here... starting it via "python" ALWAYS worked, with every former version of Python.
You said you uninstall your previous version of Python, but in your environment variables, are you sure you just have 1 link to python.exe ? Maybe you've got an other path that doesn't work and your command can't execute well.
This question already has answers here:
Sublime text3 and virtualenvs
(5 answers)
Closed 2 years ago.
In other words, how can i build a system using python from virtual environment where i got all my packages installed.
Ty in advance!
I haven't used it myself, but it looks like the Virtualenv package in Package Control does exactly what you're looking for. Please read through the README thoroughly, as it explains how the package works and which settings need to be set manually so that it will work.
Essentially, what it's doing under the hood is finding the Python executable in your virtualenv and creating a custom build system with the path to that executable, so the proper modules will be accessible during the build. It claims to work with both venv and virtualenv environments.
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Use Conda environment in pycharm
(10 answers)
Closed 4 years ago.
I have two versions of python (2.7 and 3.6) in my system. I have created a virtual environment for python 3.6 using conda commands. Now I have python36 venv in my system. I wanted to use this python version in my Pycharm or Jupyter notebook.
Please advice on how it can be done?
Go to:
Pycharm -> Preferences -> Search for project interpreter in Project -> Select the path of python in virtual_env created, or create a new one(by clicking on gear).