checker.py 文件源码

def CONTINUE(self, node):
        # Walk the tree up until we see a loop (OK), a function or class
        # definition (not OK), for 'continue', a finally block (not OK), or
        # the top module scope (not OK)
        n = node
        while hasattr(n, 'parent'):
            n, n_child = n.parent, n
            if isinstance(n, LOOP_TYPES):
                # Doesn't apply unless it's in the loop itself
                if n_child not in n.orelse:
                    return
            if isinstance(n, (ast.FunctionDef, ast.ClassDef)):
                break
            # Handle Try/TryFinally difference in Python < and >= 3.3
            if hasattr(n, 'finalbody') and isinstance(node, ast.Continue):
                if n_child in n.finalbody:
                    self.report(messages.ContinueInFinally, node)
                    return
        if isinstance(node, ast.Continue):
            self.report(messages.ContinueOutsideLoop, node)
        else:  # ast.Break
            self.report(messages.BreakOutsideLoop, node)