Skip to Content
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

Creating the model method

Suppose we have a SQL query that determines the day number of a plot check by subtracting its date from the oldest date in the plot_checks table, then pulls lab_id and the average of median_height for all plants in the given lab on the given day.

We'll run this query in a new SQLModel method called get_growth_by_lab():

    def get_growth_by_lab(self):
        query = (
            'SELECT date - (SELECT min(date) FROM plot_checks) AS day, '
            'lab_id, avg(median_height) AS avg_height FROM plot_checks '
            'GROUP BY date, lab_id ORDER BY day, lab_id;')
        return self.query(query)

We'll get back a table of data that looks something like this:

Day Lab ID Average height
0 A 7.4198750000000000
0 B 7.3320000000000000
0 C 7.5377500000000000 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Python GUI Programming with Tkinter - Second Edition

Python GUI Programming with Tkinter - Second Edition

Alan D. Moore

Publisher Resources

ISBN: 9781788835886Supplemental Content