在Python中，我看到两个变量值使用以下语法交换:
left, right = right, left
这是否被认为是交换两个变量值的标准方式，或者按照惯例，是否有其他方式最常交换两个变量？
在Python中，我看到两个变量值使用以下语法交换:
left, right = right, left
这是否被认为是交换两个变量值的标准方式，或者按照惯例，是否有其他方式最常交换两个变量？
Python从左到右计算表达式.注意
对于表达式a,b = b,a，这意味着以下内容:
b,a求值，也就是说，在存储器中创建两个元素的元组.这两个元素是在程序执行期间遇到指令之前存在的由标识符b和a指定的对象.a be assigned to the first element of the tuple (which is the object that was formerly b before the swap because it had name b)b is assigned to the second element of the tuple (which is the object that was formerly a before the swap because its identifiers was a)该机制有效地交换了分配给标识符a和b的对象
So, to answer your question: YES, it's the standard way to swap two identifiers on two objects.
By the way, the objects are not variables, they are objects.