An assignment statement evaluates the expression list (remember that this can be a single expression or a comma-separated list, the latter yielding a tuple) and assigns the single resulting object to each of the target lists, from left to right.

• 一个赋值语句对表达式序列求值(还记得这可以是单个表达式或者一个逗号分隔的序列，后者导出一个元组)，然后从左到右地将对象结果一一地赋给目的序列的每个对象。