POC Core Python Programming Concepts 2

Question 1

What is the output of `print(type(lambda x: x))`?

Accepted Answer

Answer

Lambda expressions create anonymous function objects, so their type is 'function'.

Question 2

Which of the following correctly unpacks a dictionary into keyword arguments?

Accepted Answer

func(**my_dict)

Answer

The `**` operator unpacks a dictionary into keyword arguments when calling a function.

Question 3

What does the `global` keyword do inside a function?

Accepted Answer

Declares that a variable refers to the global scope

Answer

The `global` keyword tells Python to use the variable from the global (module-level) scope rather than creating a local one.

Question 4

What is the result of `[x**2 for x in range(4) if x % 2 == 0]`?

Accepted Answer

[0, 4]

Answer

range(4) gives 0,1,2,3; filtering even values gives 0 and 2; squaring gives [0, 4].

Question 5

Which exception is raised when accessing a dictionary key that does not exist?

Accepted Answer

KeyError

Answer

Python raises a KeyError when you attempt to access a dictionary with a key that is not present.

(POC) Python Online Certification Practice Test