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Python Syntax and Basic Output

📘 Python 👁 105 views 📅 Nov 05, 2025
⏱ Estimated reading time: 2 min

Python Syntax and Basic Output

Python is a high-level, interpreted language known for its simplicity and readability. Understanding syntax and output is essential for all Python programs.

1. Python Syntax Rules

  • Python uses indentation instead of braces {} to define code blocks.

  • Statements end automatically at newline; no semicolons needed (optional).

  • Python is case-sensitive: Variable and variable are different.

  • Comments start with # for single-line comments, or ''' ''' / """ """ for multi-line comments.

# Single-line comment
"""
Multi-line comment
explaining code
"""

2. Python Statements

  • Single-line statement:

x = 5
print(x)

  • Multiple statements on a single line (use ;):

a = 1; b = 2; c = a + b
print(c)

3. Indentation

  • Indentation is mandatory for defining blocks like loops, conditionals, and functions.

if True:
    print("This is indented correctly")
# Wrong indentation will cause IndentationError

4. Python Output Using print()

  • print() displays information to the console.

# Simple output
print("Hello, Python!")

# Printing variables
name = "Alice"
age = 25
print(name, age)

# Formatted output (f-strings)
print(f"My name is {name} and I am {age} years old.")

# Using separator and end
print("Python", "is", "fun", sep="-", end="!\n")
# Output: Python-is-fun!

5. Escape Characters

Escape SequenceMeaning
\nNew line
\tTab
\\Backslash
\'Single quote
\"Double quote
print("Hello\nPython")  # Hello (new line) Python
print("Column1\tColumn2")  # Tab space

6. Key Points

  • Python emphasizes readability and simplicity.

  • Indentation defines code blocks.

  • print() is used for basic output, supports variables, formatting, and escape sequences.

  • Python statements can span multiple lines using backslash \ if needed.

  • Proper syntax is crucial to avoid runtime errors.

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