Using Apple python 2.7 and pip in macOS01 Jan 2019 #python #bash
python 2.7 with macOS. This brief overview explains how to use python 2.7 without the need for
sudo or installing to system folders.
Most users install python 2.7 using the homebrew package manager or by directly downloading python 2.7 from python.org. This results in two or more versions of python 2 installed on the same machine. Below is a third option that uses python 2.7 included with macOS and safely installs pip packages in a user directory rather than systems folders requiring
Check the python version in macOS
python -v Python 2.7.10
python binary file macOS executes by default using the
which command. In most cases it will default to
/usr/bin/python unless another version of python has been installed.
which python /usr/bin/python
-a will indicate if there is more than one version installed.
which -a python /usr/bin/python /usr/local/opt/python/libexec/bin/python
/usr/bin/python ensure the
pip package manager is installed
which -a pip /usr/bin/pip
If pip is not installed run
sudo easy_install pip Password: Searching for pip Best match: pip 18.1 Adding pip 18.1 to easy-install.pth file Installing pip script to /usr/local/bin Installing pip3.7 script to /usr/local/bin Installing pip3 script to /usr/local/bin Using /Library/Python/2.7/site-packages Processing dependencies for pip Finished processing dependencies for pip
Add the following line to
.bash_profile in your home directory. This follows best practices and will install packages in a local user folder without the need for root privilages or accessing system folders.
Close terminal and re-open it, or
source the file.
pylint helps with code analysis, error detection, and is supported by many editors.
pip install pylint --user Installing pylint in /Users/mh/Library/Python/2.7/lib/python/site-packages (1.9.3)
pipenv for managing python projects in a virtual environment. Highly recommended.
pip install pipenv --user
Make a new directory for a python project and run
pipenv and sepcify the python version the project will use.
cd ~/Documents/GitHub mkdir myproject cd myproject pipenv --python 2.7 Creating a virtualenv for this project... Pipfile: /Users/mh/Documents/GitHub/myproject/Pipfile Using /usr/bin/python (2.7.10) to create virtualenv... ⠹ Creating virtual environment...Already using interpreter /usr/bin/python New python executable in /Users/mh/.local/share/virtualenvs/myproject-MzfeKDeP/bin/python Installing setuptools, pip, wheel... done. ✔ Successfully created virtual environment! Virtualenv location: /Users/mh/.local/share/virtualenvs/myproject-MzfeKDeP Creating a Pipfile for this project...