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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def value_of( self, value: Union[sympy.Basic, float, str] ) -> Union[sympy.Basic, float]: """Attempt to resolve a Symbol or name or float to its assigned value. If unable to resolve a sympy.Symbol, returns it unchanged. If unable to resolve a name, returns a sympy.Symbol with that name. Args: value: The sympy.Symbol or name or float to try to resolve into just a float. Returns: The value of the parameter as resolved by this resolver. """

        if isinstance(value, str):
            return self.param_dict.get(value, sympy.Symbol(value))
        if isinstance(value, sympy.Basic):
            if sys.version_info.major < 3:
                # coverage: ignore
                # HACK: workaround https://github.com/sympy/sympy/issues/16087
                d = {k.encode(): v for k, v in self.param_dict.items()}
                v = value.subs(d)
            else:
                v = value.subs(self.param_dict)
            return v if v.free_symbols else float(v)
        return value