code: def visit_Call(self, node):  # type: (ast.Call) -> None
          
          if isinstance(node.func, ast.Name) and node.func.id == 'breakpoint':
              st = Debug(node.lineno, node.col_offset, node.func.id, 'called')
              self.breakpoints.append(st)
          self.generic_visit(node)
docs: python3.7+ breakpoint()