l=[1,2,3] m=[1,2,3] print(l==m) # True print(l is m) # False
import sys print(sys.getrefcount(1))
A=[‘DDD‘] B=A B[0]=‘ddd‘ print(A)
A=[‘DDD‘] B=A[:] B[0]=‘ddd‘ print(A)
Python学习笔记（3）动态类型
原文：https://www.cnblogs.com/baccano-acmer/p/10170784.html
