Python Comparision Operators
Table of Contents
Description
Comparison operators are used to compare two values and return a Boolean result: True or False. These operators are essential in making decisions in control flow (e.g., if statements).
Operator Description Example Result
== Equal to 5 == 5 True
!= Not equal to 5 != 3 True
> Greater than 5 > 3 True
< Less than 3 < 5 True
>= Greater than or equal to 5 >= 5 True
<= Less than or equal to 3 <= 5 True
Prerequisites
- Understanding of data types (especially numbers and booleans).
- Familiarity with arithmetic and variables in Python.
Examples
Here's a simple program in Python:
a = 10
b = 20
# Equal to
print(a == b) # False
# Not equal to
print(a != b) # True
# Greater than
print(a > b) # False
# Less than
print(a < b) # True
# Greater than or equal to
print(a >= 10) # True
# Less than or equal to
print(b <= 15) # False
Real-World Applications
Login systems: Check if password or OTP is correct.
Game logic: Compare scores, health, levels.
Finance apps: Validate if balance is sufficient for withdrawal.
Education portals: Determine pass/fail based on marks.
IoT devices: Trigger alerts if temperature exceeds a threshold.
Where topic Can Be Applied
Conditional programming: if, elif, while loops.
Data filtering: In Pandas, NumPy, and SQL queries.
Form validation: Comparing user inputs.
Machine Learning: Accuracy checks, label comparison.
Automation scripts: Trigger actions based on conditions.
Resources
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Interview Questions
What is the difference between == and is in Python?
Can we use comparison operators on strings? If yes, how?
What does a != b return?
How does Python handle chained comparisons like 3 < a <= 10?
What’s the result of 10 >= 10?