analyzer.py 文件源码

def _collect_comprehension_children(self, node):
        # type: (ComprehensionNode) -> List[ast.expr]
        if isinstance(node, ast.DictComp):
            # dict comprehensions have two values to be checked
            child_nodes = [node.key, node.value]
        else:
            child_nodes = [node.elt]

        if node.generators:
            first_generator = node.generators[0]
            child_nodes.append(first_generator.target)
            for if_expr in first_generator.ifs:
                child_nodes.append(if_expr)

        for generator in node.generators[1:]:
            # rest need to be visited in the child scope
            child_nodes.append(generator.iter)
            child_nodes.append(generator.target)
            for if_expr in generator.ifs:
                child_nodes.append(if_expr)
        return child_nodes