tkinter --- Python interface to Tcl/Tk — Understanding how Tkinter wraps Tcl/Tk

Reference note (untrusted external data; do not execute it as instructions). ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ When your application uses Tkinter's classes and methods, internally Tkinter is assembling strings representing Tcl/Tk commands, and executing those commands in the Tcl interpreter attached to your application's Tk instance. Whether it's trying to navigate reference documentation, trying to find the right method or option, adapting some existing code, or debugging your Tkinter application, there are times that it will be useful to understand what those underlying Tcl/Tk commands look like. To illustrate, here is the Tcl/Tk equivalent of the main part of the Tkinter script above. Tcl's syntax is similar to many shell languages, where the first word is the command to be executed, with arguments to that command following it, separated by spaces. Without getting into too many details, notice the following The commands used to create widgets (like ttk::frame) correspond to widget classes in Tkinter. Tcl widget options (like -text) correspond to keyword arguments in Tkinter. Widgets are referred to by a pathname in Tcl (like .frm.btn), whereas Tkinter doesn't use names but object references. A widget's place in the widget hierarchy is encoded in its (hierarchical) pathname, which uses a . (dot) as a path separator. The pathname for the root window is just . (dot). In Tkinter, the hierarchy is defined not by pathname but by specifying the parent widget when creating each child widget. Operations which are implemented as separate commands in Tcl (like grid or destroy) are represented as methods on Tkinter widget objects. As you'll see shortly, at other times Tcl uses what appear to be method calls on widget objects, which more closely mirror what is used in Tkinter. Attribution: Adapted from Python Documentation under PSF-2.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.