a = list()
a.append(1)
a.append(2)

for element in a:
    element ## type int

a = list()
a.append(1)
a.append(2)

for element in a:
    element ## type int


b = []
b.append((1, 3.14))
b.append((2, "test"))

for x, y in b:
    x ## type int
    y ## type float|str

Test case for "for" for a tuple :).