python - 当前函数中的 getattr

Question

有没有办法获取下面name的变量？

def save_info(self):
    name = 'hello'
    var1 = 'other item'
    var2 = 1
    ...
    TV_SERIES_FIELDS_TO_UPDATE = ['name', 'var2', 'var3', 'var4', ...]
    for field in TV_SERIES_FIELDS_TO_UPDATE:
        current_value = getattr_or_none(obj, field)
        new_value = # how do I get the variable of `name` ("hello") ?

给定一个变量名字符串，我如何在当前函数中获取它的值？

Answer 1

使用locals() :

def save_info():
    name = 'hello'
    var1 = 'other item'
    var2 = 1
    TV_SERIES_FIELDS_TO_UPDATE = ['name', 'var1', 'var2']
    for field in TV_SERIES_FIELDS_TO_UPDATE:
        print field, locals()[field]

save_info()

但是，我建议您考虑使用显式字典，而不是使用一堆不相关的变量。