Quiz Python with responses
Posted on septembre 13, 2021 in misc
PROG Python Quizz
These are all multiple choice questions with only one correct answer.
Values, Expressions, Variables
Q1. What does the following code print?
print(3)
- [ ] It does not print anything.
- [ ] Three
- [X] 3
- [ ] 0
Q2. What does the following code print?
print(3 + 2)
- [ ] It does not print anything.
- [X] 5
- [ ] 32
- [ ] 3 + 2
Q3. What does the following code print?
print("3 + 2")
- [ ] It does not print anything.
- [ ] None
- [X] 3 + 2
- [ ] 5
Purpose of below questions: Check whether the student understands: What is a variable, what does it evaluate to in an expression?
Q4. What does the following code print?
print(x)
- [X] It does not print anything. An error occurs.
- [ ] x
Q5.What does the following code print?
x = 5
print(x)
- [ ] It does not print anything. An error occurs.
- [X] 5
- [ ] x
Q6. What does the following code print?
x = 5
print(x - 3)
- [ ] It does not print anything. An error occurs.
- [ ] x - 3
- [X] 2
- [ ] 5 - 3
Purpose of below questions: Check whether the student understands: Assignment, how reassignment works, the order of execution of instructions
Q7. What does the following code print?
x = 0
x = 1
print(x)
- [ ] It does not print anything. An error occurs.
- [ ] x
- [ ] 0
- [X] 1
Q8. What does the following code print?
x = 0
print(x)
x = 1
print(x)
- [ ] It does not print anything. An error occurs.
- [ ] x
x - [ ] 0
0 - [X] 0
1 - [ ] 1
1 - [ ] 1
0 - [ ] It depends. Two executions can lead to different outcomes.
Q9. What does the following code print?
x = 5
y = 7
x = y
print(x, y)
- [ ] It does not print anything. An error occurs.
- [ ] 5 7
- [ ] 7 5
- [X] 7 7
- [ ] 5 5
- [ ] x y
Q10. What does the following code print?
x = 2
x = x - 1
print(x)
- [ ] It does not print anything. An error occurs.
- [ ] 2
- [ ] x
- [X] 1
- [ ] -1
Control Flow: Conditionals
Purpose of below questions: Check whether the student understands: Boolean values, difference between equality boolean operator and assignment
Q11. What does the following code print?
print(1 == 2)
- [ ] It does not print anything. An error occurs.
- [ ] 1 == 2
- [X] False
- [ ] 2
Q12. What does the following code print?
x = 3 == 3
print(x)
- [ ] It does not print anything. An error occurs.
- [ ] 3
- [X] True
- [ ] x
Purpose of below questions: Check whether the student understands: the if statement, the else statement
Q13. What does the following code print?
if 0 == 1:
print("a")
print("b")
- [ ] It does not print anything. An error occurs.
- [ ] It does not print anything. But no error.
- [ ] a
b - [ ] a
- [X] b
Q14. What does the following code print?
if 0 == 1:
print("a")
else:
print("b")
- [ ] It does not print anything. An error occurs.
- [ ] It does not print anything. But no error.
- [ ] a
b - [ ] a
- [X] b
Purpose of below questions: Check whether the student understands: code blocks
Q15. What does the following code print?
if 0 == 1:
print("a")
print("b")
- [ ] It does not print anything. An error occurs.
- [X] It does not print anything. But no error.
- [ ] a
b - [ ] a
- [ ] b
Q16. What does the following code print?
if 0 == 1:
print("a")
print("b")
else:
print("c")
print("d")
print("e")
- [ ] It does not print anything. An error occurs.
- [ ] a
- [ ] c
- [ ] e
- [ ] a
b - [ ] a
b
e - [ ] c
d - [X] c
d
e
Q17. What does the following code print?
if 0 == 1:
print("a")
print("b")
print("e")
else:
print("c")
print("d")
- [X] It does not print anything. An error occurs.
- [ ] a
- [ ] c
- [ ] e
- [ ] a
b - [ ] a
b
e - [ ] c
d - [ ] e
c
d
Purpose of below questions: Check whether the student understands: nested ifs
Q18. What does the following code print?
if 0 == 1:
print("a")
else:
if 1 == 1:
print("b")
else:
print("c")
print("d")
- [ ] It does not print anything. An error occurs.
- [ ] It does not print anything. But no error.
- [ ] a
- [ ] b
- [ ] c
- [ ] d
- [X] b
d - [ ] c
d - [ ] b
c
d
Control Flow: Loops
Purpose of below questions: Check whether the student understands: while statement
Q19. How many lines does the following code print?
n = 0
while n > 1:
print("ok")
- [X] 0
- [ ] 1
- [ ] Theoretically, infinitely many
Q20. How many lines does the following code print?
n = 3
while n > 1:
print("ok")
- [ ] 0
- [ ] 1
- [x] Theoretically, an infinite amount of times
Q21. How many lines does the following code print?
n = 3
while n > 1:
n = n - 1
print("ok")
- [ ] 0
- [ ] 1
- [x] 2
- [ ] Theoretically, infinitely many
Q22. What does the following code print?
x = 1
y = -1
while x < 5:
y = y - 1
x = x * 2
print(x, y)
- [ ] x, y
- [ ] 4 -4
- [ ] 4 -3
- [ ] 5 -5
- [ ] 5 -4
- [x] 8 -4
- [ ] 8 -8
Q23. What does the following code print?
n = 0
while n < 3:
if n < 2:
print("less")
else:
print("more")
n = n + 1
- [ ] It does not print anything.
- [ ] less
- [ ] more
- [ ] less
more - [x] less
less
more - [ ] less
more
more - [ ] less
less
more
more
Purpose of below questions: Check whether the student understands: for-in statement and nested loops
Q24. What does the following code print?
for x in [3, 1]:
for y in [2, 4]:
print(x, y)
- [ ] 1 2
3 4 - [ ] 3 2
1 4 - [ ] 3 2
1 2
3 4
1 4 - [x] 3 2
3 4
1 2
1 4
Functions
Purpose of below questions: Check whether the student understands: The notions and distinctions between function definition, function call, function parameters, body of the function. Which instructions are executed and in what order when defining and calling one function.
Q25. What does the following code print?
def print_one():
print(1)
- [x] It does not print anything.
- [ ] 1
Q26. What does the following code print?
def print_one():
print(1)
print_one()
- [ ] It does not print anything.
- [x] 1
- [ ] 1
1
Q27. What does the following code print?
def print_one():
print(1)
print(2)
print_one()
- [ ] It does not print anything.
- [ ] 1
2 - [x] 2
1 - [ ] 1
2
1
Consider the following code:
def print_sum(x, y):
print(x + y)
Q28. What is the name of the above-defined function?
- [ ] def print_sum(x, y)
- [ ] print_sum(x, y)
- [x] print_sum
Q29. What are the parameters (or arguments) of the above-defined function?
- [x] x, y
- [ ] x + y
- [ ] There are none
Q30. Which line(s) correspond(s) to the body of the above-defined function?
- [ ] The first line
- [x] The second line
- [ ] The first and the second lines
- [ ] There is no function body
Q31. Which line(s) contain(s) a function call in the above code?
- [ ] The first line
- [ ] The second line
- [ ] The first and the second lines
- [x] There are no function calls
Purpose of below questions: Check whether the student understands: how to pass values to a function
Q32. What does the following code print?
``` def print_sum(x, y): print(x + y)
x = 1 y = 2 print_sum(3, 4) ```
- [ ] It does not print anything. No error.
- [ ] It does not print anything. An error occurs.
- [ ] 3
- [x] 7
- [ ] 3
7
Purpose of below questions: Check whether the student understands: the return value
Q33. What does the following code print?
``` def sum(x, y): print(x) return x + y
a = 1 b = sum(a, -1) print(b) ```
- [ ] It does not print anything. An error occurs.
- [ ] 1
- [ ] 0
- [x] 1
0
Purpose of below questions: Check whether the student understands: Which instructions are executed and in what order when using several functions, possibly calling each other.
Q34. What does the following code print?
``` def fun_a(x): print(x - 1) return x + 1
def fun_b(y): print(y) z = fun_a(x) print(z) return z * 2
y = 1 z = fun_b(y) print(z) ```
- [ ] It does not print anything. An error occurs.
- [ ] 0
1
2
4 - [x] 1
0
2
4 - [ ] 4
1
0
2 - [ ] 4
1
0
2