Variable Inspector.ipynb
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Jonathan Frederic
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r14352 | { | |
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r18669 | "cells": [ | |
{ | |||
"cell_type": "markdown", | |||
"metadata": {}, | |||
"source": [ | |||
"# Variable Inspector Widget" | |||
] | |||
}, | |||
{ | |||
"cell_type": "markdown", | |||
"metadata": {}, | |||
"source": [ | |||
"## A short example implementation" | |||
] | |||
}, | |||
{ | |||
"cell_type": "markdown", | |||
"metadata": {}, | |||
"source": [ | |||
"This notebook demonstrates how one can use the widgets already built-in to IPython to create a working variable inspector much like the ones seen in popular commercial scientific computing environments." | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"from IPython.html import widgets # Loads the Widget framework.\n", | |||
"from IPython.core.magics.namespace import NamespaceMagics # Used to query namespace.\n", | |||
"\n", | |||
"# For this example, hide these names, just to avoid polluting the namespace further\n", | |||
"get_ipython().user_ns_hidden['widgets'] = widgets\n", | |||
"get_ipython().user_ns_hidden['NamespaceMagics'] = NamespaceMagics" | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"class VariableInspectorWindow(object):\n", | |||
" instance = None\n", | |||
" \n", | |||
" def __init__(self, ipython):\n", | |||
" \"\"\"Public constructor.\"\"\"\n", | |||
" if VariableInspectorWindow.instance is not None:\n", | |||
" raise Exception(\"\"\"Only one instance of the Variable Inspector can exist at a \n", | |||
" time. Call close() on the active instance before creating a new instance.\n", | |||
" If you have lost the handle to the active instance, you can re-obtain it\n", | |||
" via `VariableInspectorWindow.instance`.\"\"\")\n", | |||
" \n", | |||
" VariableInspectorWindow.instance = self\n", | |||
" self.closed = False\n", | |||
" self.namespace = NamespaceMagics()\n", | |||
" self.namespace.shell = ipython.kernel.shell\n", | |||
" \n", | |||
Jonathan Frederic
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r19766 | " self._box = widgets.Box()\n", | |
" self._box._dom_classes = ['inspector']\n", | |||
" self._box.background_color = '#fff'\n", | |||
" self._box.border_color = '#ccc'\n", | |||
" self._box.border_width = 1\n", | |||
" self._box.border_radius = 5\n", | |||
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r18669 | "\n", | |
" self._modal_body = widgets.VBox()\n", | |||
" self._modal_body.overflow_y = 'scroll'\n", | |||
"\n", | |||
" self._modal_body_label = widgets.HTML(value = 'Not hooked')\n", | |||
" self._modal_body.children = [self._modal_body_label]\n", | |||
"\n", | |||
Jonathan Frederic
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r19766 | " self._box.children = [\n", | |
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r18669 | " self._modal_body, \n", | |
" ]\n", | |||
" \n", | |||
" self._ipython = ipython\n", | |||
" self._ipython.events.register('post_run_cell', self._fill)\n", | |||
" \n", | |||
" def close(self):\n", | |||
" \"\"\"Close and remove hooks.\"\"\"\n", | |||
" if not self.closed:\n", | |||
" self._ipython.events.unregister('post_run_cell', self._fill)\n", | |||
Jonathan Frederic
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r19766 | " self._box.close()\n", | |
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r18669 | " self.closed = True\n", | |
" VariableInspectorWindow.instance = None\n", | |||
"\n", | |||
" def _fill(self):\n", | |||
" \"\"\"Fill self with variable information.\"\"\"\n", | |||
" values = self.namespace.who_ls()\n", | |||
" self._modal_body_label.value = '<table class=\"table table-bordered table-striped\"><tr><th>Name</th><th>Type</th><th>Value</th></tr><tr><td>' + \\\n", | |||
" '</td></tr><tr><td>'.join(['{0}</td><td>{1}</td><td>{2}'.format(v, type(eval(v)).__name__, str(eval(v))) for v in values]) + \\\n", | |||
" '</td></tr></table>'\n", | |||
"\n", | |||
" def _ipython_display_(self):\n", | |||
" \"\"\"Called when display() or pyout is used to display the Variable \n", | |||
" Inspector.\"\"\"\n", | |||
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r19766 | " self._box._ipython_display_()\n" | |
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r18669 | ] | |
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"inspector = VariableInspectorWindow(get_ipython())\n", | |||
"inspector" | |||
] | |||
}, | |||
{ | |||
"cell_type": "markdown", | |||
"metadata": {}, | |||
"source": [ | |||
Jonathan Frederic
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r19766 | "Pop the inspector out of the widget area using Javascript. To close the inspector, click the close button on the widget area that it was spawned from." | |
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"%%javascript\n", | |||
"$('div.inspector')\n", | |||
" .detach()\n", | |||
" .prependTo($('body'))\n", | |||
" .css({\n", | |||
" 'z-index': 999, \n", | |||
" position: 'fixed',\n", | |||
" 'box-shadow': '5px 5px 12px -3px black',\n", | |||
" opacity: 0.9\n", | |||
" })\n", | |||
" .draggable();" | |||
] | |||
}, | |||
{ | |||
"cell_type": "markdown", | |||
"metadata": {}, | |||
"source": [ | |||
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r18669 | "# Test" | |
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"a = 5" | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"b = 3.0" | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"c = a * b" | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"d = \"String\"" | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"del b" | |||
] | |||
}, | |||
{ | |||
"cell_type": "code", | |||
"execution_count": null, | |||
"metadata": { | |||
"collapsed": false | |||
}, | |||
"outputs": [], | |||
"source": [ | |||
"inspector.close()" | |||
] | |||
} | |||
], | |||
Jonathan Frederic
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r14352 | "metadata": { | |
Jonathan Frederic
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r17726 | "kernelspec": { | |
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r19766 | "display_name": "IPython (Python 2)", | |
"name": "python2" | |||
}, | |||
"language_info": { | |||
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r17726 | "codemirror_mode": { | |
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r19766 | "name": "ipython", | |
Jonathan Frederic
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r17726 | "version": 2 | |
}, | |||
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r19766 | "file_extension": ".py", | |
"mimetype": "text/x-python", | |||
"name": "python", | |||
"nbconvert_exporter": "python", | |||
"pygments_lexer": "ipython2", | |||
"version": "2.7.6" | |||
} | |||
Jonathan Frederic
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r14352 | }, | |
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r18669 | "nbformat": 4, | |
"nbformat_minor": 0 | |||
Jonathan Frederic
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r14352 | } |