![]() ![]() Just so you know, HomeBrew is for people too lazy to properly build software. I still need HomeBrew and the latest Python. In fact, XCode is already installed on my Mac. They are also years out of date - and, by their own admission, untested. The school has published the installation instructions on the following website: but they are quite confusing to me. It is a good idea to see what your package dependency tree looks like for an uninstalled package before you pull the trigger:īrew deps -tree -installed package_name Once brew is installed, you can brew update On your Intel Mac, homebrew expects that /usr/local exists before you install homebrew. Once I have changed the directory to ~/p圓9venv, I am free to install third-party libraries in that folder, and under no risk of screwing up my Mac. Source ~/p圓9venv/bin/activate & cd ~/p圓9venv When I intend to install third-party Python libraries, I create a Python virtual environment to isolate that content from the original Python library by stuffing it all in an arbitrarily named folder, the following example is in my home directory: If from above, you already have installed some version from, although any brew package dependencies that require it to install (currently) Python 3.9.5, it will build them, but not attempt to move those Python binaries from /usr/local/homebrew into /usr/local/bin. Homebrew, on Intel Big Sur, still uses the /usr/local tree for its package installation, and /opt/homebrew tree on M1 Macs. Once you have the preceding paragraph accomplished, you should adjust your PATH in your ~/.zshrc, or ~/.bash_profile shell dotfiles: Simple as pie, and nothing Apple-related gets stepped on. ![]() It installs its library in /Library/Frameworks and then soft links from its library, the binaries back into /usr/local/bin. What I have personally done is visit and download their Mac-friendly Python 3.9.5 installer. The link in the next paragraph gets you to recent versions of Python3 for the Mac. It is important that you know in advance what versions of Python that those school recommended Python libraries support because if they want Python 3.8 (example), they will likely break with a newer version. I use the plural here because, in addition to Python 2.7.16, Xcode also installs a 3.8.2 version in /usr/bin/python3. Even if your school's instructions suggest that this is okay, don't do it. My concern is to screw up my currently working Mac configuration.īecause you are installing third-party Python libraries, you do not want to install these with the Apple-provided Python versions. ![]() Unfortunately, school instructors will demonstrate SIRF and CIL usage with Python. There are instructions about integrating SIRF and CIL with MathLab, which I would like to use. The school has published the installation instructions on the following website:īut they are quite confusing to me. However, the school will require the latest Python version that is higher than 2.7. Python seems to be installed as the command "python" responds when I enter it on the terminal window. "This directory exists so that 3rd party packages can be installed here. In a terminal window I did the site-packages % site-packages % site-packages % cat README I believe this Mac comes with Python 2.7 installed. I already have XCode installed on my Mac. To work out the online examples, Mac attendees are required to install XCode, HomeBrew, and Python. Such techniques are available in a development framework and make use of a biomedical library (SIRF and CIL)īoth SIRF and CIL are available for Mac, Linux, and will be available for Windows as well. I have enrolled in an online school that will teach techniques to reconstruct images from CT, PET, MRI raw data. I have a Mac Boo Pro 16" running macOS BigSur version 11.4 I would appreciate getting some help installing HomeBrew and Python on my laptop.
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