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Make traitlets notify check more robust against classes redefining equality and bool...
Make traitlets notify check more robust against classes redefining equality and bool Before this change, numpy arrays caused problems since comparing two numpy arrays returns an array of truth values, rather than a single truth value. This change guards against redefining the semantics of comparison by notifying on a trait change if the equality comparison returns anything other than an explicit True value.

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display.py
52 lines | 1.7 KiB | text/x-python | PythonLexer
"""Simple magics for display formats"""
#-----------------------------------------------------------------------------
# Copyright (c) 2012 The IPython Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
# Our own packages
from IPython.core.display import display, Javascript, Latex, SVG, HTML
from IPython.core.magic import (
Magics, magics_class, cell_magic
)
#-----------------------------------------------------------------------------
# Magic implementation classes
#-----------------------------------------------------------------------------
@magics_class
class DisplayMagics(Magics):
"""Magics for displaying various output types with literals
Defines javascript/latex/svg/html cell magics for writing
blocks in those languages, to be rendered in the frontend.
"""
@cell_magic
def javascript(self, line, cell):
"""Run the cell block of Javascript code"""
display(Javascript(cell))
@cell_magic
def latex(self, line, cell):
"""Render the cell as a block of latex"""
display(Latex(cell))
@cell_magic
def svg(self, line, cell):
"""Render the cell as an SVG literal"""
display(SVG(cell))
@cell_magic
def html(self, line, cell):
"""Render the cell as a block of HTML"""
display(HTML(cell))