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Note: nbdiff only supports IPython 2.x at the moment.

A tool for diffing and merging IPython Notebook files.

This project was built by a team of university students from Concordia University in 2013--2014. See AUTHORS for more information.


Using Pip

If you have pip installed:

$ pip install nbdiff

From Source

  1. Download the code from this repository
  2. Run python develop

Configure Git/Mercurial

Configuring nbmerge to work with your version control system can be helpful but is not required.

NBMerge is compatible with Mercurial out of the box by running hg merge --tool=nbmerge <branch>.

Git, however, needs to be configured by adding the following to your .gitconfig file:

[mergetool "nbmerge"]
  cmd = nbmerge $LOCAL $BASE $REMOTE $MERGED

Alternatively, you can run the following command to add this configuration automatically:

$ git config --global mergetool.nbmerge.cmd = "nbmerge \$LOCAL \$BASE \$REMOTE \$MERGED"

You can then run nbmerge from git like so:

$ git mergetool --tool=nbmerge



NBDiff launches a server at localhost:5000 and allows you to view a simple 2-pane diff of two notebook files.

usage: nbdiff [-h] [before after]

Produce a diffed IPython Notebook from before and after notebooks. If no
arguments are given, nbdiff looks for modified notebook files in the version
control system. The resulting diff is presented to the user in the browser at

positional arguments:
  before      The notebook to diff against.
  after       The notebook to compare `before` to.

optional arguments:
  -h, --help  show this help message and exit


nbmerge launches

usage: nbmerge [-h] [local base remote [result]]

nbmerge is a tool for resolving merge conflicts in IPython Notebook files. If
no arguments are given, nbmerge attempts to find the conflicting file in the
version control system. Positional arguments are available for integration
with version control systems such as Git and Mercurial.

Once nbmerge is run, the UI can be accessed at http://localhost:5000

positional arguments:

optional arguments:
  -h, --help  show this help message and exit


Run the Python tests

To get all of the dependencies necessary to test nbdiff, run:

$ pip install -r requirements-dev.txt

To run the python tests, run the following command:

$ python nosetests

NBDiff adheres to PEP-8. To check the code against PEP-8, use flake8 like so:

$ flake8 tests nbdiff

To check Python test coverage, install coverage and run the tests with the --with-coverage option.

$ pip install coverage
$ python nosetests --with-coverage

Run the JavaScript tests

First, install node and npm.

Second, install the JavaScript dependencies using npm.

$ npm install

Finally, run the tests with grunt. You should output similar to the following. Note that grunt will not only run the tests, but check for common style problems with jshint.

$ grunt

Running "qunit:files" (qunit) task
Testing src/test/index.html ...OK
>> 14 assertions passed (21ms)

Done, without errors.


A diffing and merging tool for the IPython Notebook.







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