Lesson 6 of 14 · about 12 minutes · Combine conditions.
⚡ 0 XP
Step 1 of 2
Two conditions at once
Combine conditions with:
and: True only if both sides are True
or: True if at least one side is True
not: flips True and False
Example: free delivery when the order is ₹499 or more and you live within 5 km. If the shopkeeper wrote or by mistake, someone 50 km away with a big order would get free delivery!
Example
has_ticket = True
age = 10
print(has_ticket and age >= 12)
print(has_ticket or age >= 12)
print(not has_ticket)
🎯 Challenge: Free delivery bug +15 XP
The kirana shop gives free delivery only when the order amount is ₹499 or more and the distance km is 5 or less. Then it prints Free delivery!, otherwise Delivery fee: ₹40. The code has a bug: fix it.
Try twice to unlock the solution (0/2)
main.pyCtrl ⏎
Output
What your program prints appears here.
Checklist
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₹600 at 3 km is free
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₹499 at 5 km is free (edges count)
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₹600 at 8 km pays ₹40
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₹300 at 2 km pays ₹40
Lesson notes (text version)
1. Two conditions at once
Combine conditions with:
and: True only if both sides are True
or: True if at least one side is True
not: flips True and False
Example: free delivery when the order is ₹499 or more and you live within 5 km. If the shopkeeper wrote or by mistake, someone 50 km away with a big order would get free delivery!
has_ticket = True
age = 10
print(has_ticket and age >= 12)
print(has_ticket or age >= 12)
print(not has_ticket)
Challenge: Free delivery bug
The kirana shop gives free delivery only when the order amount is ₹499 or more and the distance km is 5 or less. Then it prints Free delivery!, otherwise Delivery fee: ₹40. The code has a bug: fix it.
2. Leap years
A year is a leap year (with 29 February) when:
it divides by 4 and not by 100, or
it divides by 400
"Divides by 4" in Python is year % 4 == 0 (no remainder). So 2024 is a leap year, 1900 is not (divides by 100), and 2000 is (divides by 400).
Use brackets to group conditions so they are easy to read: (a and b) or c.
Challenge: Is it a leap year?
Read a year. Print 2024 is a leap year or 2023 is not a leap year (with the real year). The starter only checks % 4, so it is wrong for 1900. Add the 100 and 400 rules.