如何将 map 字典键指向 python 中的变量？

Question

I'm making a game that saves information such as funds and stuff like that about users in a shelve. That shelve starts out looking something like this:

Userdata = shelve.open('UserData', writeback = True)
Userdata[username]={'funds' = 100, 
                    'highscore' = 0}

The username variable is defined earlier. The shelve has keys that are usernames, and the values are dictionaries with that user's data. And then, I have some in-game variables that correspond to the values stored in the dictionary:

funds = Userdata[username]['funds']
highscore = Userdata[username]['highscore']

The variables in the dictionary get changed as the user changes the in-game values. The names of the variables will always be the same as the corresponding dictionary key. The problem is, I have quite a few variables in the dictionary. I was wondering if there was a way to map the variables to the corresponding keys in the dictionary in a for loop or something, so that I don't have to define every single one? Thanks!

Answer 1

Depending on the scope you can use globals or locals for this:

In [1]: d = {'funds': 100, 'highscore': 0}
   ...: for k in d:
   ...:     locals()[k] = d[k]

In [2]: funds
Out[2]: 100

In [3]: highscore
Out[3]: 0