I wanted to install python 3.10 but that version is not available on pyenv version list.
checked by pyenv install --list.
People suggested to upgrade pyenv that but I do not see help related to updating pyenv.
pyenv isn't really 'installed' in a traditional sense, it's just a git checkout. All you have to do to update is
cd ~/.pyenv
git pull
That also updates the list of available python versions.
Related
I'm a strong pyenv and poetry user that's beginning to use pipx and looking to learn more about how it works. Specifically, I'd like to understand how it determines which Python version to use when installing.
I've noticed that it seems to search PATH for existing references to applications when you pipx install <package> to make existing installations accessible globally. This, for instance, works well with pyenv where it pipx will find a version of the package you install across any Python versions installed via pyenv.
pipx install cookiecutter
⚠️ Note: cookiecutter was already on your PATH at ~/.pyenv/shims/cookiecutter
installed package cookiecutter 1.7.3, Python 3.9.6
These apps are now globally available
- cookiecutter
done! ✨ 🌟 ✨
But what if it's a package you've never installed before? And there's a package version compatible with 3.6, 3.7, 3.8 – how will it determine with Python version to use when installing this package?
I've found you can provide the Python version PipX should install the package into by providing it as an argument to the install command (see below).
More specifically, when using pyenv, you can switch to the version you desire to install into and then provide $(which python) to automatically provide the path to that python version...
pyenv shell 3.X.X
pipx install <package-name> --python $(which python)
I recently installed Python 3.8 onto my computer. I now have Python 3.7 and 3.8. I would like to delete 3.7 but I don't want to mess anything up.
When I type 'python --version' in the Anaconda Prompt,
Python 3.7.9
I fear that if I uninstall 3.7, all the libraries in Anaconda will not work. How do I uninstall 3.7 and make sure that Anaconda "links up" with 3.8?
UPDATE:
I've since figured this out... I originally tried to install with 'conda update python' ... this does not achieve the update. I then downloaded 3.8 from Python's website. This seemed to mess up things. I then uninstalled all of Anaconda and then reinstalled it. By re-installing, Python 3.8 was installed and is working. For future updates, I am still not sure what the best way to update from 3.x to 3.y is as suggestions on other message boards did not seem to work.
I try to give you a comprehensive solution
If you want to update without removing you just need to switch the python3 to python3.8.
The way install python3.8 will be executed through ppa.
Then you can switch between version of python
sudo rm /usr/bin/python3
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 3
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.7 2
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.8 1
Choose python3 link with python3.8, then pip3 will point to python3.8
But if you remove python 3.7, you need to self configure pip again to have it point to an exact python version by
wget https://bootstrap.pypa.io/get-pip.py
python3 get-pip.py #which has been linked to 3.8
However, this processed is simple for virtual environment, you just need to config your own package of python by yourself choosing. You can install any environment by creating a new environment. Your python3.7 will be a base environment,
Thank you for sharing this. I literally just spent a day trying to update python version using conda but it goes into a seemingly endless loop of resolving conflicts. I also tried to install 3.8 directly but that did not work. The solution really was to just download and install the latest version of Anaconda.
I want to know what Python versions I could install using the pyenv install command. pyenv versions lists only installed versions and does not appear to have an option to list available versions.
How can I find out what versions of Python I can install with pyenv install?
pyenv accepts a switch to the install command to list available versions: --list, or -l for short:
$ pyenv install -l
Available versions:
2.1.3
2.2.3
2.3.7
2.4.0
2.4.1
2.4.2
...
Before running pyenv install -l, you may need to update pyenv as described here. Otherwise the list may not include the latest versions (thank you #csatt1).
I used to install pyenv by homebrew to manage versions of python, but now, I want to use anaconda.But I don't know how to uninstall pyenv.Please tell me.
From the docs:
Uninstalling pyenv
The simplicity of pyenv makes it easy to temporarily disable it, or
uninstall from the system.
To disable Pyenv managing your Python versions, simply remove the pyenv init line from your shell startup configuration. This will remove Pyenv shims directory from PATH, and future invocations like python will execute the system Python version, as before Pyenv.
pyenv will still be accessible on the command line, but your
Python apps won't be affected by version switching.
To completely uninstall pyenv, perform step (1) and then remove its root directory. This will delete all Python versions that were installed under $(pyenv root)/versions/ directory:
rm -rf $(pyenv root)
If you've installed Pyenv using a package manager, as a final step perform the Pyenv package removal. For instance, for Homebrew:
brew uninstall pyenv
Try removing it using the following command:
brew remove pyenv
None work for me (under brew) under Mac Cataline.
They have a warning about file missing under .pyenv.
(After I removed the bash_profile lines and also rm -rf ~/.pyenv,
I just install Mac OS version of python under python.org and seems ok.
Seems get my IDLE work and ...
According to python.org, Python 3.6.1 was released at the end of March. But:
» pyenv install -l | grep 3\.6\.
3.6.0a1
3.6.0a3
3.6-dev
Why is Python 3.6.1 not yet available in pyenv?
Where can I find documentation about the releases that pyenv supports? (when it was added, what is in progress, ...). The pyenv documentation does not give this information.
Is there a repository for Python releases supported by pyenv? (similar to PyPi)
If you installed pyenv via pyenv installer:
pyenv update
If you installed pyenv via Homebrew
brew upgrade pyenv
If you installed pyenv via Git:
cd $(pyenv root) && git pull
I tried pyenv update but that did not resolve the issue for me.
I had to brew update && brew upgrade pyenv before doing pyenv install 3.6.1