Unit 1: Basics of Python - Practice Quiz

1 What is Python IDLE mainly used for?

2 What does the Python Shell in IDLE allow you to do?

3 In a Jupyter Notebook, Python code is commonly written inside what?

4 Which feature allows a Jupyter Notebook to combine code with formatted explanatory text?

5 What is Google Colab?

6 Where does Google Colab commonly allow users to save notebooks?

7 Which file extension is normally used when saving a Python program?

8 Which command executes a file named program.py from a command line where Python is available?

9 Which built-in function displays output in Python?

10 What type of value does input() return by default?

11 Which Python data type represents a whole number such as ?

12 Which Python data type represents a number such as ?

13 Which operator is used for exponentiation in Python?

14 What is the result of the Python expression 10 % 3?

15 Which keyword begins a basic conditional statement in Python?

16 Which keyword provides an alternative block when an if condition is false?

17 Which loop is commonly used to iterate over items in a sequence?

18 How many values are produced by range(4)?

19 Which keyword is used to define a function in Python?

20 Which keyword sends a value back to the code that called a function?

21 In Python IDLE, which action allows a programmer to test a single statement immediately and observe its result?

22 A programmer has written several lines of Python code in IDLE and wants to execute them repeatedly. Which approach is most suitable?

23 In a Jupyter Notebook, what is the main advantage of placing code and explanatory text in separate cells?

24 A variable is created in one Jupyter code cell and used in a later cell. The later cell works only if the first cell has already been executed. Why?

25 Which feature makes Google Colab particularly useful for collaborating on Python notebooks?

26 A Colab notebook loses the value of a variable after the runtime is disconnected. What is the most likely reason?

27 Which filename is most appropriate for a Python program that calculates a student's average score?

28 A file named main.py contains print("Ready"). Which command executes it from a terminal in the same directory?

29 What is displayed by this code?

name = input("Name: ")
print("Hello", name)

30 Which statement correctly reads an integer from the user and stores it in age?

31 What are the values and types of a and b after this code executes?

a = 7 / 2
b = 7 // 2

32 What is the value and data type of result after this statement?

result = 5 + 2.0

33 What is the value of answer after this code?

answer = 2 + 3 * 4 ** 2

34 What is printed by the following code?

x = 10
print(x > 5 and x < 10)

35 What is printed by this code?

marks = 72
if marks >= 80:
    print("A")
elif marks >= 60:
    print("B")
else:
    print("C")

36 Which condition correctly checks whether an integer n is even?

37 What is printed by this code?

for i in range(2, 8, 2):
    print(i, end=" ")

38 What is the final value of total after this code executes?

total = 0
for n in [3, 5, 2]:
    total += n

39 What is printed by this program?

def calculate(x, y=2):
    return x * y

print(calculate(4))

40 Which function correctly returns the larger of two numbers a and b?

41 Under IDLE's default configuration, what normally happens when Run → Run Module (F5) is selected for a saved program?

42 The following compound statement is entered directly into IDLE's interactive Shell:

for i in range(2):
    print(i)

43 The following Jupyter cells are executed in order:

python
# Cell 1
a = 10
def value():
return a


python
# Cell 2
a = 20


python
# Cell 3
print(value())


What is printed?

44 A Jupyter notebook displays old output beneath several cells. The kernel is then restarted without clearing outputs. Which statement is correct?

45 A Colab notebook writes one file to /content/result.csv and another to /content/drive/MyDrive/result.csv after Google Drive has been mounted. The runtime is later deleted. Which outcome is expected?

46 A Colab notebook with saved outputs is shared with another user. It previously accessed an uploaded file in /content and the owner's mounted Google Drive. What does the recipient automatically receive?

47 A file named app.py contains:

print(__name__)
if __name__ == "__main__":
    print("run")

48 A project has this structure:

project/
├── data.txt          # contains P
└── tools/
    ├── data.txt      # contains T
    └── report.py     # calls open("data.txt").read()

49 The user enters 3 4 with two spaces when this program runs:

x, y = input().split()
print(x + y, int(x) + int(y), sep=":", end="!")

50 What exact character sequence is produced by this code, ignoring the prompt used by the environment?

print(*(str(i) for i in range(3)), sep=":", end=";")
print("X", end="")

51 What does the following program print?

print(-17 // 5, -17 % 5)

52 What is printed by this code on standard Python implementations using IEEE 754 binary floating-point?

n = 2 ** 53
print(float(n) == n, float(n + 1) == n + 1, float(n + 2) == n + 2)

53 What does the following expression produce?

print(2 ** 3 ** 2, -3 ** 2, (-3) ** 2)

54 What exact output is produced?

def mark(v):
    print(v, end="")
    return v

result = mark(0) and mark(1) or mark(2)
print(":", result, sep="")

55 What is printed by this program?

def middle():
    print("F", end="")
    return 2

if 1 < middle() < 3:
    print("T")
else:
    print("N")

56 What does this code print?

if x := 3 > 2:
    print(x, type(x).__name__)
else:
    print("other")

57 What is printed by this nested loop?

for n in range(2, 5):
    for d in range(2, n):
        if n % d == 0:
            break
    else:
        print(n, end="")

58 What value is printed?

total = 0
for i in range(4):
    for j in range(i):
        if j == 1:
            break
        total += i + j
    else:
        total += 10
print(total)

59 What is printed by this program?

def collect(x, items=[]):
    items.append(x)
    return items

a = collect(1)
b = collect(2)
a.append(3)
print(b)

60 What is printed by this code?

functions = []
for i in range(3):
    functions.append(lambda x, i=i: x + i)

i = 10
print([f(1) for f in functions])