Conditional Basics
What keyword starts a conditional statement in Python?
if
Name two comparison operators used in Python (besides ==).
>, < (also >=, <=, !=)
What does "nested" mean in "nested if statements"?
Placing one conditional statement inside another.
Give one example (in plain English) of a real-life decision that can be modeled with an if statement.
If it's raining, take an umbrella; otherwise, don't.
Write the line that checks whether a variable score is equal to 10. (Show only the conditional expression line.)
if score == 10:
Which operator checks if one value is not equal to another?
!=
True or False:
You can put an if statement inside another if statement.
True
Write a conditional that prints "Free shipping" if total_price is greater than or equal to 50. (Show only the conditional and print line.)
if total_price>=50:
print("Freeshipping")
Explain in one sentence the difference between if and else
if runs when a condition is true; else runs when that condition is false.
True or False:
The expression 5 <= 5 evaluates to True.
True
Given
a = 10, b = 7, what will this print?
if a > 5: if b > 5: print("Both")
else: print("Only a")
Prints "Both"
Create a short 3-line code example that checks a temperature variable and prints "Cold" if below 10, "Warm" if between 10 and 25 inclusive, and "Hot" otherwise.
if temperature<10:
print("Cold")
elif temperature<=25:
print("Warm")
else:
print("Hot")
Given x = 5, what does the following code print? if x > 3: print("A") else: print("B")
print A
What does the expression a != b mean in plain English?
"a is not equal to b"
Rewrite this nested conditional as a single-level conditional using and: check if x is positive and y is positive, then print "Both positive".
if x>0 and y>0:
print("Bothpositive")
Describe how you could use if/elif/else to assign letter grades (A, B, C, D, F) based on a numeric score. List the general numeric ranges you would use (no code needed).
Example ranges:
A: 90–100,
B: 80–89,
C: 70–79,
D: 60–69,
F: 0–59.
Write a short Python code snippet (2–3 lines) that uses if, elif, and else to print "low" if variable n is less than 10, "medium" if n equals 10, and "high" otherwise.
if n<10:
print("low")
elif n==10:
print("medium")
else:
print("high")
Write a conditional that checks whether age is between 13 and 19 inclusive using comparison operators and logical connectors.
if age>=13 and age<=19:
Explain one reason you might prefer elif over multiple nested if statements.
elif avoids unnecessary checks and makes logic clearer when choices are mutually exclusive.
A bookstore gives a 20% discount if a customer buys more than 3 books, else no discount. Write the conditional expression (single if/else block) that prints "Discount" or "No discount" based on variable books_bought.
if books_bought>3:
print("Discount")
else:
print("Nodiscount")