Python Input and Output Quiz

1. Which method is used to read all lines from a file into a list of strings, where each string represents a line?

2. What is true for file mode 'x'

Hint: Create File in Python

3. What will be the content of output.txt after this code runs?

# Assuming output.txt does not exist or is empty initially
with open("output.txt", "w") as f:
    f.write("First line\n")
    f.write("Second line")

4. What will be the output of the following print() function

print('%d %d %.2f' % (11, 22, 11.345))

5. What is the output of the following print() function

print('Mike', 'Sydney', sep='**')

6. Which of the following is the correct way to get integer input from the user and store it in a variable age

7. What will be the output of the following Python code?

print("Line 1", end="***")
print("Line 2")

8. What is the purpose of the flush=True argument in the print() function?

9. What will be the output of the following Python code?

print("The value is: {:0.2f}".format(12.3456))

10. What will be the output of print('[%c]' % 65)

11. Which mode should you use to open a file for writing, overwriting its contents if it already exists?

12. In Python 3, which functions is used to accept input from the user

13. What will be the output if the user types abc when prompted?

try:
    num = int(input("Enter a number: "))
    print(f"Number: {num}")
except ValueError:
    print("Invalid input!")
except TypeError:
    print("Type error!")

14. How can you redirect the output of a print() statement to a file instead of the console?

15. Which of the following is incorrect file handling mode in Python

16. Which standard library module is commonly used to “pretty print” complex data structures like dictionaries and lists in a more human-readable, indented format?

17. Use the following file to predict the correct output of the code

test.txt Content:

aaa
bbb
ccc
ddd
eee
fff
ggg

Code:

f = open("test.txt", "r")
print(f.readline(3))
f.close()

Hint: Read file in Python.

18. Input/Output Code Output Prediction (File I/O Scenario):

Assume data.txt contains:

Line 1
Line 2
Line 3

What will be the output of the following Python code?

with open("data.txt", "r") as f:
    first_line = f.readline()
    second_line = f.readline()
print(second_line.strip())

19. What is the primary advantage of using f-strings (formatted string literals) for output in Python 3.6+?

20. What is the output of the following print() function

print(sep='--', 'Ben', 25, 'California')

21. To take multiple space-separated inputs (e.g., 10 20 30) from a single line and convert them to integers in a list, which combination of methods is typically used?

22. In Python3, Whatever you enter as input, the input() function converts it into a string

23. What will be the output of the following code?

print('PYnative ', end='//')
print(' is for ', end='//')
print(' Python Lovers', end='//')

24. Which mode opens a file for both reading and writing, placing the file pointer at the beginning of the file?

25. Assume nums.txt contains:

12345

What will be the output of the following Python code?

with open("nums.txt", "r") as f:
    f.read(2)
    print(f.read(1))