通过字典键多次获取值而不是链接PyPy中的值之间的区别

Question

例如我有一个代码。

def my_function(my_dict, selections_list): 
    for value in selections:
        if value in my_dict:  #  maybe try -> except KeyError ?!
            a = my_dict[value] 
            # Do something
            if my_dict[value]:
                ....
            # use my_dict[value] multiple times as right value.
            # ....
            # Very complicated code

如果my_function被调用了数百万次，是否有任何主要原因可以链接my_dict [value]并在pypy中使用链接对象。

def my_function(my_dict, selections_list): 
    for value in selections:
        if value in my_dict:  #  maybe try -> except KeyError ?!
            a = my_dict[value] 
            # Do something
            if a:
            # use a multiple times instead if my_dict[value]
            # ....
            # Very complicated code

我想了解PyPy是否如此聪明。

Answer 1

我试过两次跑两次并计时。结果：没有重大区别。我猜PyPy并不那么聪明。