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How to create AGE Calculator Web App PyWebIO in Python ?

  • Difficulty Level : Medium
  • Last Updated : 17 Jun, 2021

In this article, we are going to create an AGE Calculator that will show your age in years, months, and days with the help of the current date. We will use the PyWebIO module for creating a simple and interactive interface on the web. This is a python module mostly used to create simple and interactive interfaces on the web using Python programming. It can be installed using the below command:

pip install pywebio

Stepwise Implementation:

Step 1: Import all the required modules.

Python3




# Import the following modules
from dateutil.relativedelta import relativedelta
from datetime import datetime
from time import strptime
from pywebio.input import *
from pywebio.output import *
from pywebio.session import *
import time

Step 2: Getting current time and taking input from the user.



Python3




# Getting Current time.
date = datetime.now().strftime("%d/%m/%Y")  
  
# Taking age from the user
DOB = input("", placeholder = "Your Birth Date(dd/mm/yyyy)")

Step 3: Checking whether the format of age is correct or not.

Python3




try:
    # Check whether the input age format 
    # is same as given format
    val = strptime(DOB, "%d/%m/%Y")
except:
    
    # If format is different, then through 
    # an error.
    put_error("Alert! This is not the right format")
    time.sleep(3# sleep for 3 seconds
    continue

Step 4: Split the Birth Date of the user and the Current Date by ‘/’. And then Typecast all the split parts into the integer. Swap months and years for both the user’s birth date and current date.

Python3




# Split the age by '/'
in_date = DOB.split('/')
  
# split the todays date by '/'
date = date.split('/')  
  
# Typecast all the converted part 
# into the int.
in_date = [int(i) for i in in_date] 
date = [int(i) for i in date] 
newdate = []  
  
# Swap days with years
in_date[0], in_date[2] = in_date[2], in_date[0]  
  
# Swap days with years
date[0], date[2] = date[2], date[0]

Step 5: Check whether or not the current year is smaller than the User’s D.O.B year. If the current year is smaller than through an error.

Python3




if in_date <= date:
        now = datetime.strptime(DOB, "%d/%m/%Y")
      
        # Display output in a pop window
        popup("Your Age",k
              [put_html("<h4>"f"{relativedelta(datetime.now(),now).years} Years</br> \
              {relativedelta(datetime.now(),now).months} Months</br>\
              {relativedelta(datetime.now(),now).days} Days""</h4>"), put_buttons(
                  ['Close'], onclick=lambda _: close_popup())], implicit_close=True)
else:
        # If you input the year greater than current year
        put_warning(
            f"No result found, this is {date[0]}, and you can't be in {in_date[0]}.")

Complete Code:

Python3




# Import the following modules
from dateutil.relativedelta import relativedelta
from datetime import datetime
from time import strptime
from pywebio.input import *
from pywebio.output import *
from pywebio.session import *
import time
  
# Run infinite loop
while True:  
    clear() 
      
    # Put a heading Age Calculator
    put_html("<p align=""left""><h4> AGE CALCULATOR</h4></p>
")
      
    # Getting Current time.
    date = datetime.now().strftime("%d/%m/%Y")  
      
    # Taking age from the user
    DOB = input("", placeholder="Your Birth Date(dd/mm/yyyy)")
    try:
        
        # Check whether the input age
        # format is same as given format
        val = strptime(DOB, "%d/%m/%Y")
    except:
        
        # If format is different, then through an error.
        put_error("Alert! This is not the right format")
          
        # sleep for 3 seconds
        time.sleep(3)  
        continue
    in_date = DOB.split('/'
    date = date.split('/')  
      
    # Typecast all the converted part into the int.
    in_date = [int(i) for i in in_date]
    date = [int(i) for i in date]
      
    # Define an empty list
    newdate = []  
      
    # Swap days with years
    in_date[0], in_date[2] = in_date[2], in_date[0]  
      
    # Swap days with years
    date[0], date[2] = date[2], date[0]  
    if in_date <= date:
        now = datetime.strptime(DOB, "%d/%m/%Y")
          
        # Display output
        popup("Your Age",
              [put_html("<h4>"f"{relativedelta(datetime.now(),now).years} Years</br> \
              {relativedelta(datetime.now(),now).months} Months</br>\
              {relativedelta(datetime.now(),now).days} Days""</h4>"), put_buttons(
                  ['Close'], onclick=lambda _: close_popup())], implicit_close=True)
    else:
        
        # If you input the year greater than current year
        put_warning(
            f"No result found, this is {date[0]}, and you can't be in {in_date[0]}.")
        time.sleep(3)
    clear()
    # Give user a choice
    choice = radio("Do you want to calculate again?",
                   options=['Yes', 'No'], required=True)
    if choice.lower() == 'yes':
        continue
    else:
        clear()
          
        # Show a toast notification
        toast("Thanks a lot!")  
        exit()

Output: 

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




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