def get_exact(self, name):
        """
        Refer to a variable.  The returned variable has the exact
        name (exact variable version).
        """
        try:
            return self.localvars.get(name)
        except NotDefinedError:
            if self.has_parent:
                return self.parent.get(name)
            else:
                raise

        Refer to a variable.  The returned variable has the exact
        name (exact variable version).
        
numba/core/ir.py