import copy
a=[1,2,3,4,['a','b']]
b=a
c=copy.copy(a)
d=copy.deepcopy(a)
a.append(5)
a[4].append('c')
print 'a=',a
print 'b=',b
print 'c=',c
print 'd=',d
输出
a= [1, 2, 3, 4, ['a', 'b', 'c'], 5]
b= [1, 2, 3, 4, ['a', 'b', 'c'], 5]
c= [1, 2, 3, 4, ['a', 'b', 'c']]
d= [1, 2, 3, 4, ['a', 'b']]