Not On Exam 01

class Container():
    def __init__(self, *x):
        self._data = [*x]

    def push_back(self, x):
        self._data.append(x)

    def __len__(self):
        return len(self._data)

c = Container(1, 2, 3, 4, 5, 6, 7, 8, "math314", 9)
c.push_back("another")
c._data

[1, 2, 3, 4, 5, 6, 7, 8, 'math314', 9, 'another']

if c:
    print("something")

something

c2 = Container()
c2._data

[]

if c2:
    print("something")

[].__len__()

0

"".__len__()

0

{}.__len__()

0

def f(x, y, z, **kwargs):
    if "key" in kwargs:
        return kwargs["key"]
    return x + y + z

f(1, 2, 3, edward = "math314", another = 10, key = "cool")

'cool'

f(1, 2, 3)

6