Basics of Python

🐍 What is Python?

• Python is a high-level, interpreted programming language.
• It is widely used for web development, data science, AI/ML, and automation.
• Its syntax is close to English, making it beginner-friendly.

⚙️ Setting Up Python

• Download Python from the official site: python.org.
• Install an IDE like PyCharm or use VS Code.
• You can also use the built-in IDLE for quick practice.

📊 Basics

1. Variables and Data Types

name = "Joe"
age = 10
height = 5.6
is_student = True

• String → "Hello"
• Integer → 25
• Float → 5.6
• Boolean → True / False

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# String assignment
x = "India"   # String

# Integer assignment
x = 15        # Integer

• When you reassign x, its type changes automatically — Python is dynamically typed.

2. Operators

print(2 + 3)   # Addition
print(10 / 2)  # Division
print(5 ** 2)  # Power

3. Control Flow

if age > 18:
    print("Adult")
else:
    print("Minor")

4. Loops

for i in range(5):
    print(i)

5. Functions

def greet(name):
    return f"Hello, {name}!"

print(greet("Joe"))

6. Lists

# Using square brackets
fruits = ["apple", "banana", "cherry"]

# Using list() constructor
numbers = list((1, 2, 3, 4))

# With repeated elements
zeros = [0] * 5

7.Dictionaries

# Empty dictionary
my_dict = {}

# With values
student = {
    "name": "Atmaja",
    "age": 25,
    "is_student": True
}

# Using dict() constructor
person = dict(name="John", age=30)

8.Tuples

# Empty tuple
empty_tuple = ()

# With values
numbers = (1, 2, 3)

# Mixed data types
person = ("Joe", 25, True)

# Single-element tuple (note the comma!)
single = (5,)

Happy Coding…