Python GUI for Random Generator – Code Walkthrough and Best Practices

In this article, you will learn how to create Python GUI for Random Generator. To understand this program, you should know about the following Python Programming topics: Python Functions.

 

Problem Definition

Create a Python window containing a grid of 2×2 buttons. In that window, place 4 buttons that have 4 different functionalities:

1. Button 1: Pressing Button 1 will print a random integer number.
2. Button 2: Pressing Button 2 will print a random float number.
3. Button 3: Pressing Button 3 will print a random lowercase word containing a-z
4. Button 4: Pressing Button 4 will print a random uppercase word containing A-Z

 

Tkinter Programming

Tkinter is the standard GUI library for Python. When combined with Python, it provides a fast and easy way to create GUI applications. Tkinter provides a powerful object-oriented interface to the Tk GUI toolkit, making creating a GUI application easy.

Program

from tkinter import *
from tkinter import messagebox
import random
import string

def printRandomInt():
    r_int = random.randint(1,10000000)
    messagebox.showinfo("information","Random integer number: "+str(r_int))

def printRandomFloat():
    r_float = random.random()
    messagebox.showinfo("information","Random float number: "+str(r_float))

def printRandomSmall():
    r_small = random.choice(string.ascii_lowercase)
    messagebox.showinfo("information","Random lowercase character: "+r_small)

def printRandomCap():
    r_float = random.choice(string.ascii_uppercase)
    messagebox.showinfo("information","Random uppercase character: "+r_float)


class Window(Frame):

    def __init__(self, master=None):
        Frame.__init__(self, master)                 
        self.master = master
        self.init_window()

    def init_window(self):
        #self.pack(fill=BOTH, expand=1)
        self.pack()
        button1 = Button(self, text = "Print Random Integer", fg = "Black", bg = "White", command = printRandomInt)
        button2 = Button(self, text = "Print Random Float", fg = "Black", bg = "White", command = printRandomFloat)
        button3 = Button(self, text = "Print Random Small", fg = "Black", bg = "White", command = printRandomSmall)
        button4 = Button(self, text = "Print Random Cap", fg = "Black", bg = "White", command = printRandomCap)
        button1.grid(row = 1, column = 1,padx=10,pady=50)
        button2.grid(row = 1, column = 2,padx=10,pady=50)
        button3.grid(row = 2, column = 1,padx=10,pady=10)
        button4.grid(row = 2, column = 2,padx=10,pady=10)

root = Tk()
#root.configure(background = "light blue")
root.title("Random Generator")
root.geometry("450x250")

app = Window(root)
root.mainloop()

Python GUI for Random Generator