Python Programming for Raspberry Pi, Sams Teach Yourself in 24 Hours

to span multiple rows or columns, so you have some flexibility in how the widgets appear. The grid() method defines three parame ...

4: class Application(Frame): 5: """Build the basic window frame template""" 6: 7: def __init__(self, master): 8: super(Applicati ...

For example, to link a button to an event method, you write code like this: Click here to view code image def create_widgets(sel ...

FIGURE 18.3 Demonstrating the Button event method. A typical GUI program contains lots of different event handlers, one for each ...

Click here to view code image self.label1 = Label(self, text='This is a test label') There’s not too much that you have to worry ...

So with the Checkbutton widget, instead of using an event handler, you link the widget to a control variable. The text parameter ...

app = Application(root) app.mainloop() The code in the script1805.py file should look pretty familiar to you by now. It creates ...

self.button2.grid(row=6, column=1) self.text1.focus_set() def convert(self): """Retrieve the text and convert to upper case""" v ...

LISTING 18.7 The script1807.py File Click here to view code image #!/usr/bin/python3 from tkinter import * class Application(Fra ...

These options are available for the selectmode parameter: SINGLE—Select only one item at a time. BROWSE—Select only one item but ...

self.create_widgets() def create_widgets(self): self.label1 = Label(self, text='Select your items') self.label1.grid(row=0) self ...

Click here to view code image menubar = Menu(self) filemenu = Menu(menubar) filemenu.add_command(label='Convert', command=self.c ...

self.score3.grid(row=4, column=1) self.average.grid(row=5, column=1) self.button1 = Button(self, text="Calculate Average", comma ...

FIGURE 18.4 The Bowling Average Calculator program. You should recognize all the widgets used in the script1809.py program. This ...

A. No, you can link each widget to only one method. However, you can run a separate method from within the original method’s cod ...

Hour 19. Game Programming What You’ll Learn in This Hour: Why you might want to program games Different Python game interfaces H ...

TABLE 19.1 Python Game Frameworks and Libraries As you can see, there are many development tools available for creating games wi ...

Setting Up the PyGame Library The PyGame library is a package. You learned in Hour 13, “Working with Modules,” that a group of m ...

The first step in installing PyGame is to make sure your system is all up-to-date, with any missing items installed. You do this ...

Did You Know: 404 Not Found If you get errors similar to 404 Not Found when you try to install the tools for building Python mod ...