Wed Jul 31 20:48:34 PDT 2013
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This goes beyond just the Canvas class.  I was expirmenting
with how to use __dict__ See page 810 in learning Python

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Python 3.3.0 (v3.3.0:bd8afb90ebf2, Sep 29 2012, 10:57:17) [MSC v.1600 64 bit (AM
D64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from tkinter import *
>>> Canvas.__dict__.keys()
dict_keys([
'create_rectangle',
 'itemconfig',
 'move',
 'tag_bind',
 'create_polygon',
 'itemcget',
 'addtag_below',
 'addtag_withtag',
 'canvasx',
 'canvasy',
 'select_adjust',
 'create_window',
 'select_to',
 'create_bitmap',
 'select_item',
 'tag_unbind',
 'find',
 'gettags',
 'icursor',
 'tkraise',
 'create_oval',
 'create_image',
 'lift',
 'find_overlapping',
 '__qualname__',
 '__doc__',
 'bbox',
 'coords',
 'dchars',
 'find_withtag',
 'find_enclosed',
 'scale',
 '__module__',
 'index',
 'addtag_closest',
 'select_clear',
 'find_below',
 'insert',
 'create_text',
 '_create',
 'find_closest',
 'scan_mark',
 'focus',
 'addtag_overlapping',
 'scan_dragto',
 'delete',
 'dtag',
 'find_above',
 'type',
 'lower',
 'addtag_all',
 'tag_raise',
 'itemconfigure',
 'addtag_above',
 'tag_lower',
 'addtag_enclosed',
 'create_line',
 'postscript',
 'create_arc',
 'find_all',
 '__init__',
 'addtag',
 'select_from'
])

>>> Canvas.__dict__['__doc__']
'Canvas widget to display graphical elements like lines or text.'

>>> Canvas.__dict__['__qualname__']
'Canvas'

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>>> Button.__dict__.keys()

dict_keys([
'__module__',
 'tkButtonLeave',
 'tkButtonDown',
 'tkButtonEnter',
 'flash',
 '__qualname__',
 '__doc__',
 'tkButtonUp',
 '__init__',
 'tkButtonInvoke',
 'invoke'
])


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>>> Label.__dict__.keys()
dict_keys([
'__module__',
 '__qualname__',
 '__init__',
 '__doc__'
])

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>>> Label.__dict__['__doc__']
'Label widget which can display text and bitmaps.'

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