Python Day Six : Python Lesson

Day Day Six Lesson : Python Casting

Casting is the process of converting a value from one data type to another.
Python provides built-in functions for casting:

int() → Converts a value to an integer (whole number)
float() → Converts a value to a float (decimal number)
str() → Converts a value to a string (text)

Integers,

Example:

x = int(1)   # x will be 1
y = int(2.8) # y will be 2
z = int("3") # z will be 3

Explanation:

• int(1) → The number 1 is already an integer, so it remains 1.
• int(2.8) → Converts 2.8 to the integer 2 by removing the decimal part.
• int("3") → Converts the text "3" into the integer 3.

Output:

1
2
3

Float Casting

example:

x = float(1)      # x will be 1.0
y = float(2.8)    # y will be 2.8
z = float("3")    # z will be 3.0
w = float("4.2")  # w will be 4.2

Explanation:

• float(1) → Converts 1 to 1.0
• float(2.8) → Remains 2.8
• float("3") → Converts the string "3" to 3.0
• float("4.2") → Converts the string "4.2" to 4.2

Output:

1.0
2.8
3.0
4.2

String Casting

x = str("s1")   # x will be 's1'
y = str(2)      # y will be '2'
z = str(3.0)    # z will be '3.0'

Explanation:

• str("s1") → Remains "s1" because it is already a string.
• str(2) → Converts the number 2 into the text "2".
• str(3.0) → Converts the decimal number 3.0 into the text "3.0".

Output:

s1
2
3.0

Casting is a basic but powerful Python skill. By learning how to convert data types, you can handle user input, perform calculations, and build better programs. Keep practicing—every lesson brings you closer to becoming a confident programmer! 💻🐍