Updating Python on Mac

Question

I wanted to update my python 2 6 1 to 3 x on mac but i was wondering if its possible to do it using terminal or i have to download the installer from python website    The reason why i am asking this question is because installer is not updating my terminal python version

User · Answer

Python 2 7 and 3 can co-exist  Python version shows on terminal is 2 7  but you can invoke it using  python3   see this   PeiwenMAC git Peiwen  python --version Python 2 7 2 PeiwenMAC git Peiwen  python3 Python 3 4 1  v3 4 1 c0e311e010fc  May 18 2014  00 54 21    GCC 4 2 1  Apple Inc  build 5666   dot 3   on darwin Type  help    copyright    credits  or  license  for more information

User · Answer

I believe Python 3 can coexist with Python 2  Try invoking it using  python3  or  python3 1   If it fails  you might need to uninstall 2 6 before installing 3 1

User · Answer

Echoing above on not messing with OS X install   Have been faced with a couple of reinstalls thinking I could beat the system   The 3 1 install Scott Griffiths offers above works fine with Yosemite  for any Beta testers out there    Yosemite has Python 2 7 6 as part of OS install  and typing  python3 1  from terminal launches Python 3 1  Same for Python 3 4  install here

User · Answer

You can also use   brew upgrade python3

User · Answer

I wanted to achieve the same today   The Mac with Snow Leopard comes with Python 2 6 1 version   Since multiple Python versions can coexist  I downloaded Python 3 2 3 from  http   www python org getit   After installation the newer Python will be available under the Application folder and the IDE there uses 3 2 3 version of Python   From the shell  python3  works with the newer version  That serves the purpose

User · Answer

I personally wouldn t mess around with OSX s python like they said  My personally preference for stuff like this is just using MacPorts and installing the versions I want via command line  MacPorts puts everything into a separate direction  under  opt I believe   so it doesn t override or directly interfere with the regular system  It has all the usually features of any package management utilities if you are familiar with Linux distros    I would also suggest installing python select via MacPorts and using that to select which python you want  active   it will change the symlinks to point to the version you want   So at any time you can switch back to the Apple maintained version of python that came with OSX or you can switch to any of the ones installed via MacPorts

User · Answer

I was having the same problem  but then after a bit of research I tried   brew install python3  amp  amp  cp  usr local bin python3  usr local bin python   in terminal  A warning message will pop-up saying that python 3 7 0  is already installed but it s not linked  so type the command brew link python and hit enter and hope things work right for you

User · Answer

I recommend using pyenv to manage your local python versions  both 2 x and 3 x  instead of installing new versions directly with homebrew or building new python versions from source manually  Essentially  pyenv can do two key things for you   Install different python versions under some directory  Doing pyenv install 3 8 1 will install python 3 8 1 under    pyenv versions 3 8 1  Modify your shell environment  PATH  with shims so that when you do pyenv local 3 8 1  calling python will invoke the new interpreter instead of your system python   MacOSX Specific Installation The pyenv repo is pretty detailed on how to install for different systems and what it s actually doing  but here s the basic steps for mac   Install homebrew if you don t already have it and use it to install pyenv with brew install pyenv Once you have pyenv installed  update your  bash profile file to include   if command -v pyenv 1 gt  dev null 2 gt  amp 1  then     eval  quot   pyenv init -  quot  fi  Now install some python using pyenv and then switch to it with the pyenv local command  you can see all your versions with pyenv versions   pyenv install 3 8 1  amp  amp  pyenv local 3 8 1 Note  you may need to create a new shell or reload your bash profile in your current shell for the pyenv initialization to do its thing  set up shims   With this setup  you ll be able to keep your system macosx python and switch to whatever new version of python you want available through pyenv

User · Answer

First  install Homebrew  The missing package manager for macOS  if you haven   Type this in your terminal    usr bin ruby -e    curl -fsSL https   raw githubusercontent com Homebrew install master install    Now you can update your Python to python 3 by this command brew install python3  amp  amp  cp  usr local bin python3  usr local bin python  Python 2 and python 3 can coexist so to open python 3  type python3 instead of python  That s the easiest and the best way

User · Answer

If it were me  I would just leave it as it is  Use python3 and pip3 to run your files since python and python3 can coexist      brew install python3  amp  amp  cp  usr local bin python3  usr local bin python   You can use the above line but it might have unintended consequences

User · Answer

Its always best to use homebrew to update or install python  In terminal type    usr bin ruby -e    curl -fsSL https   raw githubusercontent com Homebrew install master install    This will install homebrew  it takes sometime depending on your internet speed   Then  in terminal  type   brew update   This will first update brew  you don t have to do that if you already have the latest version   then type   brew upgrade python   This brew will update python to the latest viable version   That should do it

User · Answer

using Homebrew just do   brew install python3  amp  amp  cp  usr local bin python3  usr local bin python   done

User · Answer

This article helped me to make the right choices eventually since mac 10 14 6 by default came with python 2 7  and I had to upgrade to 3 7    brew install python3 brew update  amp  amp  brew upgrade python alias python  usr local bin python3   Referred The right and wrong way to set Python 3 as default on a Mac article

User · Answer

Instal aws cli via homebrew package manager  It is the simplest and easiest method    If you dont have homebrew installed   enter this command in your terminal    usr bin ruby -e    curl -fsSL https   raw githubusercontent com Homebrew install master install      Next  brew install awscli    This will install aws cli on your mac

User · Answer

On a mac use the following in the terminal to update python if you have anaconda   conda update python

User · Answer

The default Python on OS X shouldn t be messed with as it s used by the OS itself  If your default is 2 6 1 then you must have Snow Leopard   If you just install from the standard 3 1 disk image then you can invoke it using python3 1 from the terminal  you don t have to do any extra steps for this to work  and you can leave the plain python as 2 6 1

User · Answer

Both python 2x and 3x can stay installed in a MAC  Mac comes with python 2x version  To check the default python version in your MAC  open the terminal and type-  python --version   However to check  if you have already installed any of python 3x versions  you need to type  python3 --version   If you don t then go ahead and install it with the installer  Go the the python s official site https   www python org downloads    download the latest version     and install it    Now restart the terminal and check again with both commands-    Hope this helps

User · Answer

Easiest way is  brew update  amp  amp  brew upgrade python

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