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Merge pull request #2179 from dopplershift/pylab-switch...
Merge pull request #2179 from dopplershift/pylab-switch Enable switching %pylab mode between inline and a single gui mode in a single notebook. With this merge, `%pylab` can be called interactively to toggle inline/GUI (matplotlib floating windows) mode. After initializing `%pylab inline`, now one can call `%pylab` without arguments to activate the default GUI or ask for a specific one as usual. IPython will detect if a different GUI is requested if one was already activated and will refuse to do so (to prevent multiple event loops from running concurrently, which often leads to problems).
Ryan May - - Load All Authors

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Pylab Switching.ipynb
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In [3]:
# Should pop up a GUI window
%pylab qt
plot([1,2,3])

Welcome to pylab, a matplotlib-based Python environment [backend: Qt4Agg].
For more information, type 'help(pylab)'.
Out[3]:
[<matplotlib.lines.Line2D at 0x4566850>]
In [4]:
# Should make an inline figure
%pylab inline
plot([1,2,3])

Welcome to pylab, a matplotlib-based Python environment [backend: module://IPython.zmq.pylab.backend_inline].
For more information, type 'help(pylab)'.
Out[4]:
[<matplotlib.lines.Line2D at 0x4830ad0>]
No description has been provided for this image
In [11]:
# New GUI window--should *NOT* have the visual settings of inline
%pylab qt
plot([1,2,3])

Welcome to pylab, a matplotlib-based Python environment [backend: Qt4Agg].
For more information, type 'help(pylab)'.
Out[11]:
[<matplotlib.lines.Line2D at 0x5253850>]