copy

深浅copy 

#赋值运算

l1 = [1,2,3,[22,33]]

l2 = l1

l1.append(666)

print(l1)

print(l2)

 

l1 = [1,2,3,[22,33]]
l2 = l1.copy()
l1.append(666)
print(l1)
print(l2)