你懂python吗(12)

python的拷贝

import copy
if __name__ == '__main__':
    a=[1,2,3,[4,5,6]]
    b=a
    c=copy.copy(a) #浅拷贝
    d=copy.deepcopy(a) #深拷贝
    a.append(7)
    a[3].append(8)
    print 'a', a
    print 'b', b
    print 'c', c
    print 'd', d
#output
a [1, 2, 3, [4, 5, 6, 8], 7]
b [1, 2, 3, [4, 5, 6, 8], 7]
c [1, 2, 3, [4, 5, 6, 8]]
d [1, 2, 3, [4, 5, 6]]