Prerequisite: Python GUI – tkinter
Tkinter is the most commonly used library for developing GUI (Graphical User Interface) in Python. It is a standard Python interface to the Tk GUI toolkit shipped with Python. As Tk and Tkinter are available on most of the Unix platforms as well as on the Windows system, developing GUI applications with Tkinter becomes the fastest and easiest.
In this article, we are going to discuss how to create a ratio calculator using Tkinter module.
What is the Ratio Calculator?
It is the calculator that computes the denominator base on the given ratio values.
Explanation:
Input: a = 10 b = 20 c = 30 d = ? a : d = c : d Output: value of d is 60.0
Below is how the calculator will look like:
Formula Used:
a/b = c/d
Here a and b are given ratio and c is entered value for which we have to find the ratio i.e. the denominator d.
Step-by-step Approach:
- Create Normal Tkinter Window
Python3
# Import modulefrom tkinter import *# Create objectroot = Tk()# Adjust sizeroot.geometry("400x400")# Execute tkinterroot.mainloop() |
Output:
- Create One Frame using Frame() method and add three spin box using Spinbox() method.
Syntax:
# Create Frame frame = Frame(Object Name) # Create Spin Box # Enter Range Spinbox(frame, from_= 0, to = 10,**attr)
- Create Another Frame, add Button, Label and create a function called as ratio_calculator, which will calculate the value of X.
Syntax:
# Create Frame frame1 = Frame(Object Name) # Create Label Label(frame1, text="Enter Text",**attr) # Create Button Button(root,text="Enter Text",**attr)
Below is the implementation:
Python3
# Import Modulefrom tkinter import *# Create Objectroot = Tk()# Set height and widthwidth = 600height = 250# Set Geometry and min, max sizeroot.geometry(f"{width}x{height}")root.maxsize(width, height)root.minsize(width, height)# Create LabelLabel(root, text="Ratio Calculator", font=( "Helvetica", 18, "bold"), fg="blue").pack()# Function will calculate the value of xdef ratio_calculator(): # Get the value of spinbox using get() method s11 = int(s1.get()) s22 = int(s2.get()) s33 = int(s3.get()) # Formula Used value = (s33*s22)/s11 # change the text of label using config method value_of_x.config(text=value)# Create Frameframe = Frame(root)frame.pack()# Create Spin Boxess1 = Spinbox(frame, from_=0, to=10000000, width=10, font=("Helvetica", 14, "bold"))s1.pack(side=LEFT, padx=10, pady=10)s2 = Spinbox(frame, from_=0, to=10000000, width=10, font=("Helvetica", 14, "bold"))s2.pack(side=LEFT, padx=10, pady=10)s3 = Spinbox(frame, from_=0, to=10000000, width=10, font=("Helvetica", 14, "bold"))s3.pack(side=LEFT, padx=10, pady=10)# Add Another LabelLabel(frame, text="X", width=10, font=("Helvetica", 14, "bold"), borderwidth=1, relief="solid").pack(side=LEFT, padx=10, pady=10)# Add Another Frameframe1 = Frame(root)frame1.pack()x_value = Label(frame1, text="Value of x:", font=("Helvetica", 18, "bold"))x_value.pack(side=LEFT)value_of_x = Label(frame1, text="", font=("Helvetica", 18, "bold"))value_of_x.pack(side=LEFT)# Create ButtonButton(root, text="Calculate", borderwidth=2, width=15, font=("Helvetica", 14, "bold"), command=ratio_calculator, fg="red", bg="black").pack(pady=20)# Execute Tkinterroot.mainloop() |
Output:
