Implement Advanced Functions

Business Scenario

Welcome!

Today is your twelfth day as a Junior Data Analyst at the Indian Railways Reservation Department.

Previously you created functions for the reservation system to perform multiple operations from reusable functions.

Today, your manager wants you to improve the system further by making the booking functions more flexible and automated. The department now requires the application to handle default booking values, process multiple passengers dynamically and automate repetitive reservation operations.

To complete this task successfully, you must use Python to:​

  • Automate repetitive reservation tasks

  • Improve function reusability

Pre-Lab Preparation

git pull origin branchName

Git Pull

Topic: Implementing Advanced Functions

1) Use default arguments and variable length argumnets
2) Recursion

         

 

In Python, arguments are the values you pass into a function when you call it. They let you send data to the function so it can work with that data.

Example :

def greet(name):
    print("Hello,", name)
greet("Alice")
  • name → parameter (the variable in the function definition)
  • "Alice" → argument (the actual value you pass)

Types of arguments in Python​ :

1) Default Arguments

2) Variable - length arguments

     a) *args → multiple positional arguments

     b) **kwargs → multiple keyword arguments

1

Task 1: Create Function Using Default Arguments

Define a welcome function

def welcome_message():
   print("===================================")
   print(" Indian Railways Reservation ")
   print("===================================")
   print("Welcome to Railway Reservation System")

Call the function

2

welcome_message()

Output

3

1

Task 2: Create Passenger Booking Function

Define booking function with arguments

def book_ticket(passenger_name, train_name):
   print("Passenger Name :", passenger_name)
   print("Train Name :", train_name)
   print("Reservation Status : Confirmed")

Call the booking function

2

book_ticket(
   "Rahul Sharma",
   "Rajdhani Express")

Output

3

1

Task 3: Create Fare Calculation Function

Define fare calculation function

def calculate_fare(ticket_price, passengers):
   total_amount = ticket_price * passengers
   return total_amount

Call the function

2

final_fare = calculate_fare(2450, 2)
print("Final Fare :", final_fare)

Output

3

Task 4: Create Passenger Verification Function

Call the function

2

def verify_passenger(age):
   if age >= 18:
       return "Eligible for Reservation"
   else:
       return "Not Eligible"
result = verify_passenger(25)
print(result)

Task 5: Build Ticket Generation Function

1

Create ticket generation function

Output

3

def generate_ticket(
   passenger_name,
   train_name,
   seat_number):
   print("===================================")
   print(" Railway Reservation Ticket ")
   print("===================================")
   print("Passenger Name :", passenger_name)
   print("Train Name :", train_name)
   print("Seat Number :", seat_number)

Output

3

Call the function

2

generate_ticket(
   "Priya Singh",
   "Shatabdi Express",
   "B2-21")

Task 6: Build Final Booking Function

1

Create final booking function

def final_booking_system():

   passenger_name = "Rahul Sharma"
   train_name = "Rajdhani Express"
   seat_number = "A1-12"
   ticket_price = 2450

   print("===================================")
   print(" Indian Railways Reservation ")
   print("===================================")
   print("Passenger Name :", passenger_name)
   print("Train Name :", train_name)
   print("Seat Number :", seat_number)
   print("Ticket Price :", ticket_price)
   print("Reservation Confirmed")

Call the function

2

final_booking_system()

Output

3

Save File as : booking_functions.ipynb

4

 

Great job!

You have successfully learnt how to define and call functions and return statements for booking and fare calculations to build reusable ticket booking and reservation system

 

Checkpoint

   Git Push

git push origin branchName

Next-Lab Preparation

Topic: Implement Advanced Function Techniques

1) Use default arguments
2) Variable length args
3) Recursion

Python 12

By Content ITV

Python 12

  • 0

More from Content ITV