Quiz on Functions and Decorators in Python

What is the purpose of the *args syntax in function definitions?

What will this function return?

def test(x, y=[]):
y.append(x)
return y
print(test(1))
print(test(2))

What will be the output of the following code?

def square(x):
return x ** 2
result = list(map(square, [1, 2, 3]))
print(result)

Which of the following defines a lambda function?

What is a higher-order function?