This section applies not only for Tkinter, but also for any Python object for which you may need help.
Let's say that you need a reference to the Tkinter pack geometry manager. You can get interactive help in your Python interactive shell by using the help command, as shown in the following command lines:
>>> import tkinter
>>> help(tkinter.Pack)
This provides detailed help documentation of all the methods defined under the Pack class in Tkinter.
You can similarly receive help for all the other individual widgets. For instance, you can check the comprehensive and authoritative help documentation for the Label widget in the interactive shell by typing the following command:
>>>help(tkinter.Label)
This provides a list of the following:
- All the methods defined in the Label class
- All the standard and widget-specific options for the Label widget
- All the methods inherited from other classes
Finally, when in doubt regarding a method, look into the source code of Tkinter, which is located at <location-of-python-installation>\lib\. For instance, the Tkinter source code is located in the /usr/lib/python3.6.3/tkinter directory on my Linux Mint operating system. You might also find it useful to look at the source code implementation of various other modules, such as the color chooser, file dialogs, and ttk modules, and the other modules located in the aforementioned directory.