3.4. Comparison Operators

Used to compare two values.

Comparison operators are fundamental tools in programming that allow you to compare two values and determine their relationship. In Python, these operators will return a boolean value, which can either be True or False, based on the comparison being made.

Think of comparison operators like a judge in a game who determines who is winning. Just like the judge compares the scores to see who is ahead, comparison operators check which value is greater, smaller, or if they are equal.

= Equal to 5 True

The equal to operator (==) checks if two values are the same. If they are equal, it returns True; otherwise, it returns False. This is crucial for decision-making in coding, such as when you want to execute code only if a variable has a specific value.

Imagine you are checking if a friend has the same number of candies as you do. If you both have 5 candies, you would say, 'Yes, we have equal candies!' which is similar to saying that 5 == 5 is True.

! Not equal to 5 True

The not equal to operator (!=) checks if two values are different. If the values are not equal, it returns True; otherwise, it returns False. This operator is useful for negating conditions and ensuring that a condition does not meet a certain requirement.

Think of a teacher checking if students submitted their homework. If a student's work was different from what was expected, the teacher would note that the submission is not equal (or compliant) to the requirement, much like saying 3 != 5 is True.

Greater than 7 True

The greater than operator (>) compares two values to check if the first one is larger than the second. If it is, the operator returns True; otherwise, it returns False. It's often used in numeric comparisons.

Consider a race where you're comparing speeds. If one runner finishes at 10 seconds and another at 7 seconds, you would say the first runner is not faster, so 10 > 7 is False, whereas 8 > 7 would be True.

< Less than 3 True

The less than operator (<) checks if the first value is smaller than the second value. If it is, it returns True; if not, it returns False. This operator helps in scenarios like checking grades or scores.

If you're comparing ages to see who is younger, a child who is 5 years old is younger than someone who is 9, so you would determine 5 < 9 is True, much like deciding who can be the 'youngest' in a group.

= Greater than or equal 5 True

The greater than or equal to operator (>=) checks if a value is either greater than or exactly equal to another value. This returns True if either condition is satisfied and helps in scenarios where thresholds matter.

In a game, if a player needs at least 5 points to advance to the next level, they must be either greater than or equal to 5 points. If they score exactly 5, they pass; hence 5 >= 5 is True.

<= Less than or equal 4 True

The less than or equal to operator (<=) checks if the first value is either less than or equal to the second value. It returns True for either condition, which is particularly useful in comparisons where limits apply, such as age restrictions.

Imagine a movie theater that allows anyone aged 12 or younger to enter for free. If a child's age is 12, they would still qualify for the free entry. Therefore, 12 <= 12 is True, while 10 <= 12 is also True.

✅ Example:

a = 10
b = 7
print(a > b) # Output: True

In this example, we are using the greater than operator to compare two values, where 'a' equals 10 and 'b' equals 7. The expression 'a > b' evaluates if 10 is greater than 7, which it is, and thus prints True.

Think of comparing the heights of two plants. If one plant is 10 cm tall while another is 7 cm tall, you can confidently state that the first plant is taller, or 10 > 7 is True.

--