human
I wrote the below code

    @wraps(meth)
    def _meth_wrapper(self, expr, **kwargs):
        if (expr in self.math_macros):
            return ('%s%s' % (self.math_macros[expr], self._get_math_macro_suffix(real)))
        else:
            return meth(self, expr, **kwargs)
    return _meth_wrapper

What's a good function header?

=====
Here's a good function header?
assistant
#Here's a good function header.

def _as_macro_if_defined(meth):