Python In HistoryPage posts=列表（q）名称错误：名称'；q'；没有定义

您有一个缩进错误。行

posts=list（q）

及其后的行应进入

get

方法：

class HistoryPage(BlogHandler):
    def get(self, path):
        q = Page.by_path(path)
        q.fetch(limit = 100)

    posts = list(q)
    if posts:
        self.render("history.html" , path = path, posts = posts)

    else:
        self.redirect("/_edit" + path)

class HistoryPage(BlogHandler):
    def get(self, path):
        q = Page.by_path(path)
        q.fetch(limit = 100)

        posts = list(q)
        if posts:
            self.render("history.html" , path = path, posts = posts)   
        else:
            self.redirect("/_edit" + path)