Friday 9 February 2024

Python Comparison Operators ,Comments and Line Continuation


Python Comments and Line Continuation


  • Used to explain code, provide instructions, or disable code sections.

  • Single-line comments: Start with #. Everything after # on that line is ignored by the interpreter.

  • Multiline comments: Use triple quotes (''' or """). Everything between the quotes is ignored.



# This is a single-line comment.

This is a multiline comment.
It can span multiple lines.

# This line is disabled using a single-line comment.
print("This line will not be executed.")

Line Continuation:

  • Used to break long lines of code into multiple lines for readability.

  • Achieved by using a backslash (\) at the end of the line without spaces.

  • The next line is treated as a continuation of the current one.



long_expression = 10 + \
                20 + \
print(long_expression)  # Output: 60

Best Practices:

  • Use comments sparingly but effectively to explain complex logic or non-obvious code.

  • Use meaningful and descriptive comments that accurately reflect the code's purpose.

  • Maintain consistent indentation for both code and comments.

  • Use line continuation judiciously to avoid making code overly fragmented. Consider alternative approaches like using parentheses for complex expressions if possible.

Additional Notes:

  • Comments are not removed during execution, so they are included in the final compiled bytecode.

  • Commenting out code is a common way to temporarily disable sections for testing or debugging.

  • Line continuation can also be used within strings and parentheses for clarity.

I hope this comprehensive explanation helps!

What are Comparison Operators?

Comparison operators are symbols used to compare two values in Python. They produce a Boolean result – either True or False. These operators form the backbone of decision-making within your code.

Common Comparison Operators

Here's a table of the most common comparison operators in Python:





Equal to

5 == 3 (False)


Not equal to

10 != 10 (False)


Greater than

7 > 2 (True)


Less than

3 < 9 (True)


Greater than or equal to

4 >= 4 (True)


Less than or equal to

6 <= 8 (True)

Using Comparison Operators

Let's look at some examples:


age = 25
if age >= 18
    print("You are eligible to vote.")

num1 = 10
num2 = 5
if num1 != num2:
    print("The numbers are different.")

Key Points

  • Boolean Results: Comparisons always yield either True or False.

  • Conditional Statements: Comparison operators are essential within if, elif, and else statements for controlling the flow of your programs.

  • Loops: They help create conditions for loops like while and for (e.g., while i < 10).

  • Chaining Comparisons: You can chain multiple comparisons together: 10 < x < 20

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