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Python GUI Programming with Tkinter
book

Python GUI Programming with Tkinter

by Alan D. Moore
May 2018
Beginner to intermediate content levelBeginner to intermediate
452 pages
11h 26m
English
Packt Publishing
Content preview from Python GUI Programming with Tkinter

Populating the record list

The Treeview widget is added to our application, but we need a way to fill it with data.

We'll create a method called populate_recordlist() by executing the following code:

    def populate_recordlist(self):

The logic is simple enough: just get all the rows from the model and send them to the record list's populate() method.

We could write it as simply as this:

        rows = self.data_model.get_all_records()
        self.recordlist.populate(rows)

Remember, though, that in the event of a problem with the file, get_all_records() will raise an Exception; we need to catch that exception and let the user know things are wrong.

Update the code with the try and except blocks as follows:

 try: rows = self.data_model.get_all_records() except ...
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Publisher Resources

ISBN: 9781788835886Supplemental Content