Python Numbers 🎯

Welcome to the Python Numbers tutorial! In this lesson, we'll dive into the world of numbers in Python, which is the fundamental building block for every programming language. Let's get started! 💡

Understanding Python Numbers 📝

Python has several built-in data types for handling numbers. The primary number types are:

Integers (int) - whole numbers (e.g., 123, -45)
Floating-point numbers (float) - numbers with decimal points (e.g., 3.14, -12.98)

Integers 📝

Integers are whole numbers, and they can be positive or negative. To declare an integer in Python, simply assign a whole number to a variable.

python

my_integer = 123
print(my_integer)  # Output: 123

Integer Operations 📝

Python provides various operations for integers. Here's a list of common integer operations:

Addition (+)
Subtraction (-)
Multiplication (*)
Division (/)
Modulus (%) - returns the remainder of a division operation
Floor Division (//) - returns the largest integer not greater than the result of the division

python

my_integer1 = 12
my_integer2 = 5

# Examples of integer operations
sum = my_integer1 + my_integer2
difference = my_integer1 - my_integer2
product = my_integer1 * my_integer2
quotient = my_integer1 / my_integer2
remainder = my_integer1 % my_integer2
floor_division = my_integer1 // my_integer2

print(f'Sum: {sum}')
print(f'Difference: {difference}')
print(f'Product: {product}')
print(f'Quotient: {quotient}')
print(f'Remainder: {remainder}')
print(f'Floor Division: {floor_division}')

Floating-point numbers 📝

Floating-point numbers represent real numbers with decimal points. To declare a floating-point number in Python, simply assign a number with a decimal point to a variable.

python

my_float = 3.14
print(my_float)  # Output: 3.14

Floating-point Operations 📝

Python provides the same set of operations for floating-point numbers as for integers.

python

my_float1 = 3.14
my_float2 = 2.0

# Examples of floating-point operations
sum_float = my_float1 + my_float2
difference_float = my_float1 - my_float2
product_float = my_float1 * my_float2
quotient_float = my_float1 / my_float2

print(f'Sum: {sum_float}')
print(f'Difference: {difference_float}')
print(f'Product: {product_float}')
print(f'Quotient: {quotient_float}')

Important Note 📝

It's important to note that the // operator for floor division can produce unexpected results with floating-point numbers. To perform floor division on floating-point numbers, use the math.floor() function from the math module.

python

from math import floor

# Examples of floor division on floating-point numbers
floor_division_float1 = floor(my_float1 // my_float2)
floor_division_float2 = floor(my_float2 // my_float1)

print(f'Floor Division: {floor_division_float1}')
print(f'Floor Division (reverse): {floor_division_float2}')

Quiz 🎯

Question: What is the difference between integers and floating-point numbers in Python?

A: They are the same thing. B: Integers can only handle whole numbers, while floating-point numbers can handle real numbers. C: Integers can only handle real numbers, while floating-point numbers can handle whole numbers.

Correct: B Explanation: Integers can only handle whole numbers, while floating-point numbers can handle real numbers with decimal points.

That's it for this lesson on Python numbers! We've covered both integers and floating-point numbers, including their operations and differences. Next up, we'll dive into Python variables and data types! 🚀

Stay tuned, and happy coding! 💡