Virtual Environments with Python: Difference between revisions
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== Creating virtual environments on Mac == | == Creating virtual environments on Mac == | ||
First, install `virtualenv` if it is not already installed: `sudo pip(3) install virtualenv`. A new terminal shell is required to have the `virtualenv` command available. | First, install `virtualenv` if it is not already installed: `sudo pip(3) install virtualenv`. A new terminal shell is required to have the `virtualenv` command available.<ref>[http://stackoverflow.com/a/10763461 Build a `virtualenv` of python 3] - Stack Overflow</ref> | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
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$ which python3 | $ which python3 | ||
</syntaxhighlight> | </syntaxhighlight> | ||
== Using a virtual environment in PyCharm == | |||
* '''File''' > '''Default Settings...''' > '''Default Project''' > '''Project Interpreter''' | |||
** Click the gear icon to the right of '''Project Interpreter:''' | |||
*** Choose '''Add Local''' for existing virtualenv, or '''Create VirtualEnv''' for a new one | |||
*** Select the virtualenv, and apply the changes.<ref>[https://www.jetbrains.com/pycharm/help/creating-virtual-environment.html Creating Virtual Environment] - PyCharm 4.5.3 Help</ref> | |||
== References == | |||
<references /> | |||
* [http://hackercodex.com/guide/python-development-environment-on-mac-osx/#virtualenv Python Development Environment on Mac OS X Yosemite 10.10: virtualenv] - Hacker Codex | |||
Revision as of 20:49, 28 August 2015
Overview
Mac OS X Yosemite comes with Python 2.7 installed.
After installing Python 3.4, the python command still invokes Python 2.x. This can be overcome by using python3 instead.
Similarly, the pip command invokes pip that was installed with Python 2.x. So, sudo pip install [package_name] will install for Python 2.x and leave Python 3.x unchanged. pip3 can be used to update Python 3.x on the command line.
Creating virtual environments on Mac
First, install virtualenv if it is not already installed: sudo pip(3) install virtualenv. A new terminal shell is required to have the virtualenv command available.[1]
$ virtualenv -p /Library/Frameworks/Python.framework/Versions/3.4/bin/python3 py3env $ source py3env/bin/activate $ pip install package-name
To find the path to Python 3.x:
$ which python3
Using a virtual environment in PyCharm
- File > Default Settings... > Default Project > Project Interpreter
- Click the gear icon to the right of Project Interpreter:
- Choose Add Local for existing virtualenv, or Create VirtualEnv for a new one
- Select the virtualenv, and apply the changes.[2]
- Click the gear icon to the right of Project Interpreter:
References
- ↑ Build a
virtualenvof python 3 - Stack Overflow - ↑ Creating Virtual Environment - PyCharm 4.5.3 Help