快速映射/修改Python命令的大列表中的值?

我有一些代码,我想加快速度。也许我的想法是对的,但每当我问StackOverflow时,总会有人知道一个聪明的小技巧“使用map!”“试试这个lambda”,或者“导入itetools”,我希望有人能帮上忙。这是我关心的代码部分:

#slowest part from here....
for row_dict in json_data:
    row_dict_clean = {}
    for key, value in row_dict.items():
        value_clean = get_cleantext(value)
        row_dict_clean[key] = value_clean
    json_data_clean.append(row_dict_clean)
    total += 1
#to here...

list 包含字典,我需要运行每个 value 通过一个小清洁工。最后我得到了一份很好的清理字典的清单。任何聪明的 iterate

def get_json_data_clean(json_data):
    json_data_clean = []
    total = 0
    #slowest part from here....
    for row_dict in json_data:
        row_dict_clean = {}
        for key, value in row_dict.items():
            value_clean = get_cleantext(value)
            row_dict_clean[key] = value_clean
        json_data_clean.append(row_dict_clean)
        total += 1
    #to here...
    return json_data_clean

def get_cleantext(value):
    #do complex cleaning stuffs on the string, I can't change what this does
    value = value.replace("bad", "good")
    return value

json_data = [
    {"key1":"some bad",
     "key2":"bad things",
     "key3":"extra bad"},
    {"key1":"more bad stuff",
     "key2":"wow, so much bad",
     "key3":"who dis?"},
    # a few million more dictionaries
    {"key1":"so much bad stuff",
     "key2":"the bad",
     "key3":"the more bad"},
]

json_data_clean = get_json_data_clean(json_data)
print(json_data_clean)

每当我在脑袋里套上一个小铃铛,也许有更好的办法。感谢您的帮助!