1d = {1: 2, 3: 4}
2print(d.pop(3), d)
3print(d)
4print(d.pop(1, 42), d)
5print(d.pop(1, 42), d)
6print(d.pop(1, None), d)
7try:
8    print(d.pop(1), "!!!")
9except KeyError:
10    print("Raised KeyError")
11else:
12    print("Did not raise KeyError!")
13