1# basic list functionality
2x = [1, 2, 3 * 4]
3print(x)
4x[0] = 4
5print(x)
6x[1] += -4
7print(x)
8x.append(5)
9print(x)
10f = x.append
11f(4)
12print(x)
13
14x.extend([100, 200])
15print(x)
16x.extend(range(3))
17print(x)
18
19x += [2, 1]
20print(x)
21
22# unsupported type on RHS of add
23try:
24    [] + None
25except TypeError:
26    print('TypeError')
27