[matplotlib-devel] Easy problem working with dev library

​Assuming you cloned the repo from git, just checkout any revision you want.

If didn’t clone from git, just reinstall matplotlib anyway you want.

​-Paul.

···

On Sat, May 16, 2015 at 5:52 PM, Paul Hobson <pmhobson@…1003…7…> wrote:

After you’ve setup your development environment with all of the MPL dependencies, navigate to the MPL source directory and install it with:

$ python setup.py develop

or

$ pip install -e .

That’ll create a link in site-packages (or whatever that directory is) to the source directory. After you make changes to the source code, you’ll either need to use the “imp” module to reload MPL and the submodule you changed. I typically find it easier to just restart my python interpreter.

-Paul

On Sat, May 16, 2015 at 1:45 PM, Neil Girdhar <mistersheik@…1972…> wrote:

How do I set it up so that I can import my local matplotlib dev copy?

I tried making a sym-link to matplotlib/lib/matplotlib, but it’s giving me errors:

import matplotlib.transforms as mtransforms

AttributeError: ‘module’ object has no attribute ‘transforms’

Thanks,

Neil


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    Thanks, and if I want to revert my system to its old matplotlib?


​Assuming you cloned the repo from git, just checkout any revision you want.

But you have to rerun the "pip install -e ." or "setup.py develop" so that the extension code will be rebuilt if there were any extension code changes between revisions.


If didn't clone from git, just reinstall matplotlib anyway you want.

It's not as simple as that, unfortunately, because different installation methods put things in different places. For example, if you are on linux, the package manager will install the /usr tree while setup etc will install in the /usr/local tree.

The usual advice for getting around such problems is to use a fresh virtualenv (or conda environment if you are using Anaconda) for your development. Alternatively you can use a user install to a location of your choice and then add that to your PYTHONPATH when you want to work in development mode, and remove it when you want to run with whatever python environment you had before.

Eric

···

On 2015/05/16 3:20 PM, Paul Hobson wrote:

On Saturday, May 16, 2015 at 14:58, Neil Girdhar <mistersheik@…287… > <mailto:mistersheik@…287…>>, wrote:

​-Paul.

    On Sat, May 16, 2015 at 5:52 PM, Paul Hobson <pmhobson@…287… > <mailto:pmhobson@…287…>> wrote:

        After you've setup your development environment with all of the
        MPL dependencies, navigate to the MPL source directory and
        install it with:

        $ python setup.py develop

        or

        $ pip install -e .

        That'll create a link in site-packages (or whatever that
        directory is) to the source directory. After you make changes to
        the source code, you'll either need to use the "imp" module to
        reload MPL and the submodule you changed. I typically find it
        easier to just restart my python interpreter.
        -Paul

        On Sat, May 16, 2015 at 1:45 PM, Neil Girdhar > <mistersheik@…287… <mailto:mistersheik@…287…>> wrote:

            How do I set it up so that I can import my local matplotlib
            dev copy?

            I tried making a sym-link to matplotlib/lib/matplotlib, but
            it's giving me errors:

                 import matplotlib.transforms as mtransforms
            AttributeError: 'module' object has no attribute 'transforms'

            Thanks,

            Neil

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