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Python magic to manipulate the Python path

Project description

Quick-start article

pypath-magic adds an IPython magic (err… Jupyter magic?) command for easily manipulating your Python path. To use the magic command, just load the extension from an IPython session:

In [1]: %load_ext pypath_magic

After loading, you will have access to the %pypath magic. You can type:

In [2]: %pypath

to list all the custom paths added by pypath-magic. When you get started, you won’t have anything there. To add some custom paths, just change to a directory and call %pypath -a:

In [3]: %cd path/to/my-repo

In [4]: ls
data_wranglers.py
plot_helpers.py

In [5]: %pypath -a
Added u'/absolute/path/to/my-repo' to path.

In [6]: %pypath
/absolute/path/to/my-repo

Now you can reuse those helper functions:

In [7]: from plot_helpers import plot_slope_marker

Changes to your python path will persist across IPython sessions, and those paths will be available outside of IPython. If you later want to delete a directory from your path, just use %pypath -d:

In [8]: %cd path/to/my-repo

In [9]: %pypath -d
Deleted u'/absolute/path/to/my-repo' from path.

You can also list your entire python path with %pypath -l:

In [10]: %pypath -l

/Users/tonysyu/code/yutils
/Users/tonysyu/code/skimage
/Users/tonysyu/code/mpl/lib
/Users/tonysyu/code/ipython
/Users/tonysyu/code/deli
/Users/tonysyu/code/mpltools
/Applications/Canopy.app/appdata/canopy-1.4.1.1975.macosx-x86_64/Canopy.app/Contents/lib/python27.zip
/Applications/Canopy.app/appdata/canopy-1.4.1.1975.macosx-x86_64/Canopy.app/Contents/lib/python2.7
...
/absolute/path/to/my-repo

For additional usage information, type:

In [11]: %pypath?

Install

To install using pip:

$ pip install git+https://github.com/tonysyu/pypath-magic

To install from source:

$ git clone https://github.com/tonysyu/pypath-magic.git
$ cd pypath-magic
$ python setup.py install

If you get an error like:

error: invalid command 'egg_info'

you probably need to update setuptools:

pip install --upgrade setuptools

Dependencies

  • Python 2.7/3.4 (older versions probably work, but this is not tested)
  • IPython >= 1.1
  • setuptools >= 0.7

License

New BSD (a.k.a. Modified BSD). See LICENSE file in this directory for details.

Project details


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