➕➖ Operators in Python#
Get ready to supercharge your code with operators! Operators let you perform calculations, compare values, and work with logic in Python. They’re like the tools 🛠️ you’ll use for almost everything.
What Are Operators? 🤔#
Operators are special symbols or keywords that help you perform operations on variables and values.
1. Arithmetic Operators 🔢#
Used for math calculations.
| Operator | Meaning | Example | Result |
|---|---|---|---|
| + | Addition | 7 + 3 | 10 |
| - | Subtraction | 7 - 3 | 4 |
| * | Multiplication | 7 * 3 | 21 |
| / | Division | 7 / 2 | 3.5 |
| % | Modulus | 7 % 2 | 1 |
| // | Floor Division | 7 // 2 | 3 |
| ** | Exponent | 2 ** 3 | 8 |
Practice:
print(5 + 4) # 9
print(10 % 3) # 1
2. Comparison Operators 🧐#
Compare values and return True or False.
| Operator | Meaning | Example | Result |
|---|---|---|---|
| == | Equal to | 5 == 5 | True |
| != | Not equal to | 5 != 3 | True |
| > | Greater than | 5 > 3 | True |
| < | Less than | 5 < 3 | False |
| >= | Greater or equal | 5 >= 5 | True |
| <= | Less or equal | 3 <= 5 | True |
Practice:
print(7 > 2) # True
print(5 == 4) # False
3. Logical Operators 🧠#
Combine multiple conditions.
| Operator | Meaning | Example | Result |
|---|---|---|---|
| and | Both True | (5 > 2) and (3 < 4) | True |
| or | Either | (5 < 2) or (3 < 4) | True |
| not | Opposite | not(5 == 5) | False |
Practice:
print(True and False) # False
print(not (2 > 1)) # False
4. Assignment Operators 🖊️#
Assign and update values.
| Operator | Example | Equivalent To |
|---|---|---|
| = | x = 5 | x = 5 |
| += | x += 3 | x = x + 3 |
| -= | x -= 2 | x = x - 2 |
| *= | x *= 4 | x = x * 4 |
| /= | x /= 2 | x = x / 2 |
Practice:
score = 10
score += 5 # score is now 15
5. Membership Operators 🔍#
Check if a value is in a sequence.
| Operator | Example | Result |
|---|---|---|
| in | ‘a’ in ‘apple’ | True |
| not in | 3 not in | True |
Practice Questions with Solutions 🏆#
- Practice: Write code to check if 6 is divisible by 3.
- Solution:
print(6 % 3 == 0) # True
- Practice: If
x = 3, what is the result ofx ** 2 + 1?- Solution:
x = 3
print(x ** 2 + 1) # 10
- Practice: Check if the word “cat” is in “education”.
- Solution:
print("cat" in "education") # True
Step-by-Step Challenge: Score Calculator 🎮#
Task:
Start with score = 0. Add 10, subtract 2, multiply by 3.
Print the final score.
Solution:
score = 0
score += 10 # 10
score -= 2 # 8
score *= 3 # 24
print("Final Score:", score)
Output:
Final Score: 24
Well done! You’re now a pro at using operators in Python! 🥳 Keep practicing and try creating mini calculators or conditional games!
