16.1.4 Mapping Basic Tk into Tkinter
Class commands in Tk correspond to class constructors in Tkinter.
button .fred =====> fred = Button()
The master of an object is implicit in the new name given to it at creation time. In
Tkinter, masters are specified explicitly.
button .panel.fred =====> fred = Button(panel)
The configuration options in Tk are given in lists of hyphened tags followed by values.
In Tkinter, options are specified as keyword-arguments in the instance constructor, and
keyword-args for configure calls or as instance indices, in dictionary style, for
established instances. See section 16.1.6 on setting options.
button .fred -fg red =====> fred = Button(panel, fg = "red")
.fred configure -fg red =====> fred["fg"] = red
OR ==> fred.config(fg = "red")
In Tk, to perform an action on a widget, use the widget name as a command, and follow
it with an action name, possibly with arguments (options). In Tkinter, you call methods on
the class instance to invoke actions on the widget. The actions (methods) that a given
widget can perform are listed in the Tkinter.py module.
.fred invoke =====> fred.invoke()
To give a widget to the packer (geometry manager), you call pack with optional
arguments. In Tkinter, the Pack class holds all this functionality, and the various forms
of the pack command are implemented as methods. All widgets in Tkinter are subclassed from the Packer, and so inherit
all the packing methods. See the Tix
module documentation for additional information on the Form geometry manager.
pack .fred -side left =====> fred.pack(side = "left")