how to make python3 default on catalina
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to set python 3 as the default version of python on macos catalina, you can follow the steps outlined below. this tutorial will guide you through installing python 3, updating your shell configuration, and verifying that python 3 is the default version.
step 1: install python 3
1. **using homebrew**: the easiest way to install python 3 on macos is by using homebrew. if you don’t have homebrew installed, you can install it by running the following command in your terminal:
after homebrew is installed, you can install python 3 with the following command:
this will install the latest version of python 3.
2. **verify installation**: after installation, you can verify that python 3 is installed by running:
this should display the version of python 3 that you just installed.
step 2: update the shell configuration
to make python 3 the default python version, you need to update your shell configuration file. depending on the shell you are using (bash, zsh, etc.), you will need to modify a specific file.
1. **determine your shell**: by default, macos catalina uses `zsh`. you can check your current shell by running:
2. **edit the shell configuration file**:
for `zsh`, edit the `.zshrc` file:
for `bash`, edit the `.bash_profile` or `.bashrc` file:
3. **add alias**: in the file, add the following line to create an alias for `python` that points to `python3`:
4. **save changes**: to save changes in `nano`, press `ctrl + o`, then `enter`, and then exit with `ctrl + x`.
5. **apply changes**: apply the changes by running:
or for bash:
step 3: verify the default version
to check that python 3 is now the default version, run:
this should display the version of python 3 that you installed.
step 4: install pip (if not already installed)
if you want to manage python packages, you can install `pip`. usually, it comes with python 3 installations, but you can verify it with:
if ...
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