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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 eval_now(self, code):
 """Reformat and evaluate a code snippet and return code for the result."""

        result = eval(self.reformat(code))
        if result is None or isinstance(result, (bool, int, float, complex)):
            return repr(result)
        elif isinstance(result, bytes):
            return "b" + self.wrap_str_of(result)
        elif isinstance(result, str):
            return self.wrap_str_of(result)
        else:
            return None