Implementing the application

To start our application script, create a folder called ABQ data entry and a file inside it called data_entry_app.py.

We'll start with the following boilerplate code we learned in Chapter 1, Introduction to Tkinter:

import tkinter as tk
from tkinter import ttk

# Start coding here


class Application(tk.Tk):
    """Application root window"""

if __name__ == "__main__":
    app = Application()
    app.mainloop()

Running this script should give you a blank Tk window.

Saving some time with a LabelInput class

Every input widget on our form has a label associated with it. In a small application, we can just create the label and input separately, then add each to the parent frame as follows:

form = Frame()
label = Label(form, text='Name')
name_input = Entry(form)
label.grid(row=0, column=0)
name_input.grid(row=1, column=0)

That works fine and you could do it that way for your application, but it also creates a lot of tedious, repetitious code, and moving inputs around means...