if func in ("choice", "function_choice"):
// arguments of `choice` may contain complex expression,
// so use indices instead of arguments
args = list(range(len(node.args)))
else:
// arguments of other functions must be literal number
assert all(type(arg) is ast.Num for arg in node.args), "Smart parameter\"s arguments must be number literals"
args = [arg.n for arg in node.args]
After Change
// we will use keys in the dict as the choices, which is generated by code_generator according to the args given by user
assert len(node.args) == 1, "Smart parameter has arguments other than dict"
// check if it is a number or a string and get its value accordingly
args = [key.n if type(key) is ast.Num else key.s for key in node.args[0].keys]
else:
// arguments of other functions must be literal number
assert all(type(arg) is ast.Num for arg in node.args), "Smart parameter\"s arguments must be number literals"
