Mac os x python 3
This method is dead-ass simple and a little fun. Second, you will need to have installed XCode onto your Mac. We will be using XCode to install HomeBrew application. If you have already installed XCode onto your Mac you can skip step 1 and jump straight to step 3. You can confirm which version of Python was installed all by running the command below the exact same command you tried earlier in this guide. It should show up as follows:.
How to Install the Updated Python 3 in Mac OS
You have now installed Python 3 successfully if you see something similar in your Terminal :. You can also hit both Control and D keys at the same time instead of the Return key. Simply type python into the Terminal to run with Python 2. How to Install Python 3 on Mac. That binary will be only available from the venv above, as in after you do:. To include frameworks other than the ones provided do the following:.
This tool osxrelocator essentially changes the path for the libs in the framework such that they are relative to the executable within the.
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Just try this with any python file in the examples folder. If you want to use Kivy from the command line, double-click the Make Symlinks script after you have dragged the Kivy. To test if it worked:. Running any Kivy application from the command line is now simply a matter of executing a command like the following:.
Install the requirements using homebrew :. You will have to manually install gstreamer support if you wish to support video playback in your Kivy App.
The latest port documents show the following py-gst-python port. I figured it would cause breakages down the line in a really frustrating way that I wouldn't know how to troubleshoot. I thought the best path forward was to rip and replace whatever version of Python I was running to make a clear and definitive switch to the latest and greatest. My first idea on how to make Python 3 the default Python on my system was to move the old version and add the new one:.
Thankfully, MacOS protected me from breaking something I don't fully understand. Further research proves this is exactly what we shouldn't do. Now that we know what not to do, let's look at what we could do.
Downgrading Python to version 3.6.5_1 with Homebrew on Mac OS X
There are a couple options when we think about common installation patterns for applications on MacOS. Python's website has a MacOS Python 3 installer we can download and use. What's nice about an alias is that it's specific to our command-line shell. Since I use zsh by default, I put the following into the.
If you are using the default Bash shell, you can append this same text to your. This strategy works, but it isn't ideal for making future updates to Python. The Homebrew project provides a free and open source package manager for MacOS that many people rely on. It gives Apple users a power similar to apt-get or yum. If you are a Homebrew user, you may already have Python installed. To quickly check, run:. Okay, great!
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The Homebrew maintainers have updated the default Python bottle to point to the latest release. Since the Homebrew maintainers are more dependable at updating the release than most of us, we can use Homebrew's version of Python 3 with the following command:. To make sure the path above points to where Homebrew installed Python in our environment, we can run brew info python and look for the path information. This method, of using Homebrew to manage our Python environment, is a good starting place, and it made sense to me at the time. It makes sense for anyone new to Python to begin with Python 3.
At any time, we can remove the aliases from our shell's configuration file to go back to using the default copy of Python on the system. The pip command is the default package manager specifically for Python packages. Although we changed our default Python command to be version 3, we have to alias our pip command separately if it's on the previous version. First, we need to check what version we're on:. To ensure we're installing packages compatible with our new version of Python, we'll use another alias to point to the compatible version of pip.
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Since we're using Homebrew as our package manager in this situation, we know it installed pip3 when we installed Python 3. The default path should be the same as Python 3, but we can confirm this by asking the shell to find it:. Last, we can confirm that running pip points to pip3 by opening a new shell or by resetting our current shell and seeing what we point to:.
When asking for a technical review of this article, Moshe Zadka gave me a warning that my solution could result in an unreliable idea of which Python is running that depends too closely on shells loading aliases. I knew Moshe was familiar with Python, but I didn't know is that he is an author of many Python tutorials as well as an upcoming book on Python development on MacOS.
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He helped 40 colleagues develop Python safely and consistently on MacOS systems following one core principle:. How do we stop caring about the default?
Moshe recommends using pyenv to manage Python environments. While other installation options are available, the easiest way to get started is with Homebrew:. Now that Python 3 is installed through pyenv, we want to set it as our global default version for pyenv environments:. The power of pyenv comes from its control over our shell's path.