Practical 3: Practicing Python Loops and Logical Conditions

Objective

In this lab, you will implement both recursive and iterative approaches to generate Fibonacci sequences in Python. This exercise will help you understand the differences between recursive and iterative problem-solving techniques, as well as analyze their performance characteristics.

Prerequisites

• Basic knowledge of Python syntax
• Understanding of functions in Python
• Familiarity with recursion and iteration concepts

Lab Steps

Step 1: Python Operators

Looking into python operators with print statements

import random
a = 10
b = random.randint(0,20)
c = 100
print("a is", a, "and", "b is", b)
print("The answer to a + b is", a + b)
print("a < b is", a < b)
print("a == b is", a == b)
print("a + b is", a + b)
print("a * b is", a * b)
print("a to the power of b is", a ** b)

Step 2: If-Else Statements

Trying out if, elif and else

a = 33
b = 200
if b > a:
    print("b is greater than a")
a = 33
b = 33
if b > a:
    print("b is greater than a")
elif a == b:
    print("a and b are equal")
a = 200
b = 33
if b > a:
    print("b is greater than a")
elif a == b:
    print("a and b are equal")
else:
    print("a is greater than b")

Step 3: Match case Statements

Printing different days

def main():
    day = 8
    match day:
        case 1:
            print("Monday")
        case 2:
            print("Tuesday")
        case 3:
            print("Wednesday")
        case 4:
            print("Thursday")
        case 5:
            print("Friday")
        case 6:
            print("Saturday")
        case 7:
            print("Sunday")
        case _:
            print("Not a weekday")
main()

Step 4: While Loops

While Loop

A guessing game using a while loop

import random
a = 10
b = random.randint(0,20)
while(c != b):
    c = int(input("Enter Guess! "))
    if (c == b):
        print("You won!")
        break
    else:
        print("Wrong Answer, Try Again!")

Remember to analyze the time and space complexity of each approach and consider how they might perform with very large inputs.