What will this code do?

def f(*args):
    result = []
    for seq in args:
        for x in seq:
            if not x in result:
                result.append(x)
    return ''.join(result)
s1, s2, s3= "message", "massage", "mask"
print(f(s1, s2, s3))

What will this code do?

def f(*args):
    result = []
    for x in args[0]:
        for w in args[1:]:
            if x in w:
                break
        else:
            result.append(x)
    return "".join(result)

s1, s2, s3= "hello", "hi", "good morning"
print(f(s1, s2, s3))

What will this code do?

sorted([1, 2, 3, 4, 5], key=lambda x: -x, reverse=True)

What will this code do?

def f(arr):
    if not arr:
        return 0
    return arr[0] + f(arr[1:]) 
f([1, 2, 3, 4, 5])

What is the result of calculating this function called??

def f(n):
    return n * f(n-1) if n > 1 else 1

What will this code do?

def f(arr):
    return 0 if not arr else arr[0] + f(arr[1:])
print(f([]))

What will this code do?

def f(arr):
    return arr[0] if len(arr) == 1 else arr[0] + f(arr[1:])
print(f([]))

What will this code do?

def f(arr):
    first, *rest = arr
    return first if not rest else first + f(rest)
print(f([]))

What will this code do?

def f(n):
    def g(x):
        return x**n
    return g
g = f(2)
print(g(7))

What will this code do?

def f():
    _x = None
    def g(x=None):
        nonlocal _x
        if x is None:
            return _x
        _x = x
    return g
g = f()
print(g(), g(10), g(), g(5), g())