Start Python Challenge: Day 1 Key Activities

• Print in python

  The print() function is used to display output on the screen.

print("Hello World")

• Variables

  A variable is used to store data that can be used later in a program. In Python, you don’t need to declare the type — it’s dynamically assigned.

name = "shiva"
x = 25
price = 24.78

Types of Operator

Python supports several types of operators:

1. Arithmetic Operators: +, -, *, /, //, %, **

2. Assignment Operators: =, +=, -=, *=, /=, //=, %=, **=

3. Comparison Operators: ==, !=, >, <, >=, <=

4. Logical Operators: and, or, not

5. Bitwise Operators: &, |, ^, ~, <<, >>

6. Membership Operators: in, not in

7. Identity Operators: is, is not

Types Conversion

1. Implicit Conversion

Python automatically converts one data type to another.

a = 5      # int
b = 2.0    # float
result = a + b  # result is float (7.0)

2. Explicit Conversion (Type Casting)

You manually convert one data type to another using built-in functions:

# int to float
x = float(5)    # 5.0

# float to int
y = int(3.8)    # 3

# string to int
z = int("10")   # 10

# int to string
s = str(25)     # "25"

• Input in Python

a = input("what's the value of a?") #result of input is always str
b = int(input()) #result of input is integer
c = float(input()) #result of input in float

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Let’s Practice

Q1: Write a program to input 2 numbers & print their sum

num1 = int(input("Enter the first input"))
num2 = int(input("Enter the second input"))
print(num1 + num2)

Q2: Write a program to input 2 floating point numbers & print their average

a = float("what's the a?")
b = float("what's the b?")
avg = (a + b)/ 2
print("average", avg)