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Notes python and IPython
Python
Virtual envs
Virtual environments are the chroot and jails of python. They essentially
temporarily append to the path and source locally installed versions of packages
$ python3 -m venv jail
Creates a new python in
$ source jail/bin/activate
$ deactivate
Start and stop the venv. The $PS1 should indicate which one is active
$ pip install numpy ipython
Installs latest versions of packages to the venv. Use pip not pip3 in venvs
IPython
For a full blown IDE experience in shell, you'll want to use the IPython REPL. Follow the vim ipython setup instructions to use it rStudio style
Magic in scripts
>>> from IPython import get_ipython
>>> get_ipython().magic('reset -f')
Functions exactly like typing %reset -f in the IPython interpreter. When
sourcing entire files, percent magic syntax won't work
Graphical interface
For certain applications, such as plotting graphs, a gui becomes much more
capable than a terminal. matplotlib can be easily set up to open a
live-updating gui window controlled by ipython
>>> get_ipython.magic('pylab')
In [01]: %pylab
Starts up a gui for plots. It may not open until the first figure is created
[//]: # ex: set ft=markdown tw=80: