写出下列语句执行后的结果。
- a = [1, 2, 3]
- b = a
- c = []
- c = a
- d = a[:]
- print(a, b, c, d)
结果为:____________________
继续执行如下语句:
- b[0] = 'b'
- print(a, b, c, d)
结果为:
继续执行如下语句:____________________
- print(id(a), id(b), id(c), id(d))
结果为: ____________________
继续执行如下语句:
- c[0] = 'c'
- print(a, b, c, d)
结果为: ____________________
继续执行如下语句:
- d[0] = 'd'
- print(a, b, c, d)
结果为:____________________
继续执行如下语句:
- print(id(a), id(b), id(c), id(d))
结果为:____________________
请对上述的实验过程进行总结: