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Python Comments: Esy Tips to Write Clear, Friendly Code

Python Tutorial-

Python Comments: 7 Tips to Write Clear, Friendly Code

Introduction-


Trulli Trulli

✅ Introduction to Python Comments

✅The Python spokperson (coder) completely ignores comments when running the program but people reading your code will see them.That’s why good comments save time, reduce confusion, prevent bugs, and make it easier for others to review or update your code later.


✅ What are comments in Python?

✅ Python comment is text the spokperson (coder). In Python, anything after # on a line is a comment. Triple-quoted strings can also act as docstrings to document modules, classes, and functions.

✔️ . comments-



# This is a single-line comment
x = 40  # Inline comment explaining a tricky value



💡 Note: Python Comments “Keep comments short and clear — one idea is enough.”

✅ Types of Python Comments.

✔️ 1.Single-line comments with # -👉 Keep your comment lines short (around 70–79 characters). This makes them easier to read in editors and code reviews.



# Store user input after trimming spaces
name = input("Enter your name: ").strip()

age = 25  # Fixed age value for testing


✔️ 2. Multi-line comment patterns (block comments) -👉 Python has no special multi-line comment token. Instead, stack # lines.



# Normalize input:
# 1) Trim whitespace
# 2) Lowercase
# 3) Remove diacritics
text = normalize(text)


✔️ 3. Multi-line comment patterns (block comments) -👉 Docstrings are triple-quoted strings placed right after a definition. Tools like Sphinx and IDEs surface them automatically.



def area(radius: float) -> float:
    """Compute the area of a circle.

    Args:
        radius: Circle radius in meters.

    Returns:
        Area in square meters.
    """
    from math import pi
    return pi * radius * radius


✅ Python Comments Best Practices-

✔️ 1. Tip 1: Explain “why,” not “what”.- 👉 Think of comments as leaving little notes for your future self (or another developer) who might not remember the full context.



# Using a loop instead of recursion because Python's recursion limit
# might break on very large inputs.
def traverse_tree(tree):
    ...


✔️ 2. Tip 2: Keep comments short, simple, and specific.-👉 “Keep comments short and clear — one idea is enough.”


✔️ 3. Tip 3: When should I use a docstring vs. a # comment?-👉 Use # comments for quick notes right next to the code. These are best for short explanations like “why this line exists” or to remind yourself of tricky parts.


✔️ 4. Tip 4: How long should a comment be?-👉 “Keep your comments short and simple. One sentence is usually enough. If you find yourself writing a whole paragraph, it’s better to clean up the code or put the extra explanation in a docstring instead.”


✔️ 5. Tip 5: Can I put comments at the end of a line?-👉 Inline comments are okay to use. Just make sure they’re helpful and not too long. Keep them short and clear so the line doesn’t get dirty.


✔️ 6. Tip 6: How do I keep comments up to date?-👉 They need care too. Whenever you change your code, check the comments and update them so they still make sense..


💡 Note: Python Comments Best Practices Case-sensitive language – Think of comments as leaving little notes for your future self (or another developer) who might not remember the full context.

✅ Example 1:-Your First Python Program



print("www.learntosap.com!")


✅ Welcome Python tutorial

Welcome to our Python tutorial! Here, you’ll learn Python basics and try out code live without leaving the page.

✅ Why Python?

Your First Program

print("Hello, World!")

Live Python Code Preview



Practice - Yes/No Quiz

1.Do comments affect how Python code is executed?

2.Does every Python comment start with the # symbol?

3.Can Python comments span multiple lines using multiple # symbols?


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