Python Programming: Variables, F-string, User Input

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1. What is the output of the following code?

x = 10

x= x + 5

print(x)

• 10

• 15

• Error

• None of the above

What will be the output of the following?

x = 'hello'

y = x

x = x + ' world'

print(y)

• 'hello'

• 'hello world'

• 'world'

• Error

What will the following code print?

x = 10

y = 20

print(f"{x=} and {y=}")

• 10 and 20

• 10= and 20=

• x=10 and y=20

• Error

Which of the following variable names is valid in Python?

• 1variable

• variable name

• variable-name

• _variable

Which of the following statements is true about Python variable?

• Variables can hold values of any type, and their type can change during runtime.

• Variables must be declared with a type before usage.

• Variable names are case-insensitive.

• Python does not allow variables to store references to objects.

What is the type of the value returned by input()?

• int

• str

• float

• It depends on the user's input.

What will happen if you pass a number to the len() function?

print(len(10))

• 1

• 10

• Error

• None