Formatting and Decorators

1

Which function is used to format strings in Python?

A) format() B) stringify() C) format_string() D) str_format()

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Answer & Solution

Answer: Option A

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2

In Python, what does the % operator do when used for string formatting?

A) Substitutes variables B) Raises an error C) Performs division D) Calculates exponentiation

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Answer & Solution

Answer: Option D

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3

Which of the following is an f-string in Python?

A) f"Hello {name}" B) "Hello {}".format(name)" C) "Hello %s" % name D) format("Hello {}", name)

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Answer & Solution

Answer: Option A

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4

What will be the output of the following Python expression if x=22.19?

print("%5.2f"%x)

A) 22.1900 B) 22.00000 C) 22.19 D) 22.20

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Answer & Solution

Answer: Option C

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5

The expression shown below results in an error.

print("-%5d0",989)

A) True B) False

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Answer & Solution

Answer: Option B

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6

In Python, what does the expression {:.2e} do in a formatted string?

A) Formats a number in scientific notation B) Formats a floating-point number C) Formats an integer D) Formats a string

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Answer & Solution

Answer: Option A

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7

What is the purpose of the @wraps decorator in Python's functools module?

A) Preserve original function's metadata B) Create wrappers for functions C) Decorate GUI elements D) Modify function arguments

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Answer & Solution

Answer: Option A

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8

What will be the output of the following Python code?

s='{0}, {1}, and {2}'
s.format('hello', 'good', 'morning')

A) 'hello good and morning' B) 'hello, good, morning' C) 'hello, good, and morning' D) Error

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Answer & Solution

Answer: Option C

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9

What will be the output of the following Python code?

'%x %d' %(255, 255)

A) 'ff, 255' B) '255, 255' C) '15f, 15f' D) Error

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Answer & Solution

Answer: Option A

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10

What will be the output of the following Python code?

class A:
    @staticmethod
    def a(x):
        print(x)
A.a(100)

A) Error B) Warning C) 100 D) No output

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Answer & Solution

Answer: Option C

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