Make a program that filters a list of strings and returns a list with only your friends name in it.
If a name has exactly 4 letters in it, you can be sure that it has to be a friend of yours! Otherwise, you can be sure he's not...
Ex: Input = ["Ryan", "Kieran", "Jason", "Yous"]
, Output = ["Ryan", "Yous"]
friend ["Ryan", "Kieran", "Mark"] `shouldBe` ["Ryan", "Mark"]
Note: keep the original order of the names in the output.
def friend(x):
pass
def friend(x):
return [n for n in x if len(n) == 4]