Python Syntax

Python syntax is simple and easy to read, making it one of the most beginner-friendly programming languages. Let’s explore the basics of Python syntax! 🚀

1. Writing Python Code

✔ Python uses indentation instead of curly braces {}.
✔ No need to declare variable types.
✔ Code is executed line by line (interpreted language).

Example:

print("Hello, World!")  # Output: Hello, World!

2. Python Indentation

Python uses indentation to define blocks of code. Incorrect indentation will cause an error.

✅ Correct Example:

if True:
    print("This is indented correctly.")  # Indentation is required

❌ Incorrect Example (will cause an error):

if True:
print("This will cause an error.")  # No indentation

3. Python Comments

Comments are ignored by Python and are used for explanations.

✔ Single-line Comment:

# This is a comment
print("Hello, Python!")  # This prints a message

✔ Multi-line Comment:

"""
This is a multi-line comment.
It spans multiple lines.
"""
print("Python is awesome!")

4. Python Variables

✔ Variables do not need explicit declaration.
✔ The type is assigned automatically.

Example:

name = "Alice"  # String
age = 25        # Integer
height = 5.6    # Float
is_student = True  # Boolean

print(name, age, height, is_student)

5. Python Data Types

6. Python Input & Output

✔ Taking User Input:

name = input("Enter your name: ")
print("Welcome, " + name + "!")

✔ Printing Multiple Values:

print("Python", "is", "fun", sep=" - ")  # Output: Python - is - fun

7. Python Case Sensitivity

Python is case-sensitive, meaning Name and name are different variables.

name = "Alice"
Name = "Bob"
print(name)  # Output: Alice
print(Name)  # Output: Bob

8. Python Line Breaks & Multiple Statements

✔ Writing multiple statements on one line:

x = 10; y = 20; print(x + y)

✔ Breaking long lines using \ (backslash):

total = 10 + 20 + \
        30 + 40
print(total)  # Output: 100

9. Python Code Execution

Python code can be executed in:

• Python Shell (REPL) → python
• Python Script (.py files) → python filename.py
• IDEs (VS Code, PyCharm, etc.)