Understanding Print Functions, Variables, and Naming in Programming

Learning Python starts with mastering **print functions, variables, and proper naming conventions**. These form the foundation of structured programming.

1. The Print Function

The print() function displays output to the screen. It helps programmers **show messages, debug values**, or interact with users.

print("Hello, World!")

You can print multiple items:

name = "Arko"
age = 20
print("My name is", name, "and I am", age, "years old.")

2. Variables in Programming

Variables **store data** that can be reused. They help organize and manipulate information efficiently.

user_name = "Arko"
user_age = 20

Variable Types:

• num = 10 → Integer
• pi = 3.14 → Float
• message = "Welcome" → String
• is_active = True → Boolean

3. Proper Naming Conventions

Proper naming makes **code readable and understandable**.

✅ Valid Variable Names:

• user_name → Uses underscores
• age25 → Numbers are allowed
• price_per_item → Descriptive naming

❌ Invalid Variable Names:

• 2years → Can't start with a number
• user-name → Hyphens not allowed
• class → Reserved Python keyword

Tip: Always use **clear, meaningful variable names** to improve readability.

Conclusion

• ✔ print() function is **used to display output**.
• ✔ **Variables store and manage data efficiently**.
• ✔ **Naming conventions ensure clean, readable code**.

Master these **core programming concepts** and build solid foundations in Python! 🚀