Functional programming - Python

• What is the output of this code?
  nums = {1, 2, 3, 4, 5, 6}
  nums = {0, 1, 2, 3} & nums
  nums = filter(lambda x: x > 1, nums)
  print(len(list(nums)))

Result - 2

• What is the output of this code?
  def power(x, y):
  if y == 0:
  return 1
  else:
  return x * power(x, y-1)

print(power(2, 3))

Result - 8

• Fill in the blanks to calculate the expression x*(x+1) using an anonymous function and call it for the number 6.

a = (_____ x: x__ (x+1))_____

print(a)

Answer - lambda, *, 6

a = (lambda x: x* (x+1)) (6)

Result - 42

• Fill in the blanks to leave only even numbers in the list.

nums = [1, 2, 8, 3, 7]
res = list( _____(_______x: x%__==0, nums))
print(res)

Answer: filter
lambda
2

Answering or trying to answer practice questions as this helps remember lessons while studying Python.

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