浅拷贝:
l1 = [1,2,['a','b']]
l2 = l1[:]
print('l1=',l1)
print('l2=',l2)
l1[-1][1]=55
print('*******修改l1之后,l2会不会跟着被修改?*******')
print('l1=',l1)
print('l2=',l2)
深拷贝:
import copy
l1 = [1,2,['a','b']]
l2 = copy.deepcopy(l1)
print('l1=',l1)
print('l2=',l2)
l1[-1][1]=55
print('*******修改l1之后,l2会不会跟着被修改?*******')
print('l1=',l1)
print('l2=',l2)