Install OpenCV 4 with Python 3 on macOS Catalina Posted on October 21, 2019 by Paul. Updated 11 February 2020. In this article, I will show you how to install OpenCV 4 with Python 3 on macOS Catalina. There is also a video version of this tutorial. Python 2 vs Python 3. Python 2 is still on your system even though you’ve installed Python 3. In order to send commands to Python 3, you will need to enter python3 in the terminal. If you enter python, the command will be sent to Python 2. Assuming you’ve now installed Python 3, you can check it by running the following command in Terminal. I am experiencing a Python menu issue on both of my Mac's. One Mac has macOS Catalina and Python 3.7.4 via pyEnv with Tcl/Tk 8.6.9 and the other has macOS Catalina and Python 3.8.0. Via pyEnv and Tcl/Tk 8.6.9 and both area exhibiting the same behavi.
May 29th, 2020
- Link toInstalling the latest version of Python on Mac OS Catalina and overriding the old default pre-installed versionpodcast on anchorfm
I finally did it. I successfully installed Python version 3.7.7 viaHomebrew on my Maclaptop with OS Catalinainstalled.
For those of you that still might be trying to figure outhow todo this, I will walk you through.
The reason why I was eager to make sure that I had the latest versioninstalled was because I am working on publishing (open-source)teaching-relateddocumentation on Read The Docs, and I need to havePythoninstalled in order to be able to install the programsnecessary to publishthere.
Mac Catalina Python3 Default
The default2.7.17 version of Python was retired this pastJanuary 2020. I had tried back then to replace it with Python 3+,but was unsuccessful at the time. The following is what I did today:
First I updated Homebrew. Yes, I used Homebrew to (re)installPython. It’s really easy. It’s just a matter of putting the pieces of thepuzzle together correctly!
I ran the command
To updateHomebrew. Then I ran the command
To (re)install Python. Then I ran
To see which version of Python my Mac laptop was recognizing. Itstill recognized only Python 2.7.17. So I ran the followingcommand:
It told me the path to my newly installedPython 3.7.7. I had tochange the path to Python in order for my Mac to recognize thenewly installed version. This is what the command brew info python returned tome in Terminal:
So I had to add the following at the bottom of my .zshrc fileto update the path to my newly installed version of Python viaHomebrew:
Then I made sure to quitTerminal and go back in so that the pathwould actually be updated in a newTerminal windowinstance.
Catalina Python3 Default
Then I checked what version of Python was recognized now with
And this is what was returned:
Success! It’s as easy as that.
And BTW, if you don’t know how to access your .zshrc file in Catalina,you simply execute the following command:
And your file will open in a new window. Then you can paste
Catalina Python3 インストール
At the bottom of the file.
I will be embedding this episode of Plugging in The Holes along with atranscript in the form of a post oninterglobalmedianetwork.com for yourhearing and reading pleasure. Bye for now!
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Created by Maria D. Campbell who lives and works in New York City building useful things.You should follow her on Twitter. She also has a developer blogmariadcampbell.comyou may want to check out!