Python : pass variable name as argument

Question

I have a function f(x) in which many local variables are created. x is a string with the same name as one of these local variables and I would like

Answer 1

Use a dict

Simply, use a dict:

def f(x):
    values = {
        "a": [1,2,3],
        "b": [2,3,4],
        "c": [3,4,5]
    }
    values[x][0] = 10
    return values["a"], values["b"], values["c"]

If you really really want, use your original code and do locals()[x][0] = 10 but that's not really recommended because you could cause unwanted issues if the argument is the name of some other variable you don't want changed.