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RSS订阅原创 深拷贝与浅拷贝 copy和deepcopy
浅拷贝就是只复制地址 深拷贝就是复制地址所指的那个文件a = [1,2,3]a = ba = [1,2,3]b = copy.deepcopy(a)a = [1,2,3]b = [4,5,6]c = [a,b]d = copy.deepcopy( c)a = [1,2,3]b = [4,5,6]c = [a,b]d = copy.copy( c)a = [1,2,3]b = [4,5,6]c = (a,b) #换成元组不可变类型d = copy.copy( c) #如果
2020-08-08 16:53:56
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ListField怎么接收空字符串
2022-12-07
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