Python: Iterating through constructor's arguments

Question

I often find myself writing class constructors like this:

class foo:
    def __init__(self, arg1, arg2, arg3):
        self.arg1 = arg1
        self.arg2 = arg2
         


        

Answer 1

What about iterating over the explicit variable names?

I.e.

class foo:
    def __init__(self, arg1, arg2, arg3):
        for arg_name in 'arg1,arg2,arg3'.split(','):
            setattr(self, arg_name, locals()[arg_name])

f = foo(5,'six', 7)

Resulting with

print vars(f)

{'arg1': 5, 'arg2': 'six', 'arg3': 7}

My suggestion is similar to @peepsalot, except it's more explicit and doesn't use dir(), which according to the documentation

its detailed behavior may change across releases