there is a field in the QaAnswer table in this table. When json returns, I want to add a field to QaAnswer. I don t know how to add it . class QaAnswer(db.Model): __tablename__ = qa_answer id = db.Column(db.Integer, primary_key=True) a...
when passing the help parameter to add_argument when using flask_restful parameter parsing, the help message will not appear if an error is reported. The code is as follows: -sharp -*-coding:utf-8 -*- from flask_restful import reqparse from flask impo...
recently learn crawler, use selenium to crawl the home page picture of the website, test to get the url, of the picture, but always report the following error, can not find the reason, hope the hero to help! the code is as follows: item.py import sc...
as shown in the figure below, the data object property of this vue will come with its own initial value no matter whether it is initialized or not, no matter how it is refreshed. How can this be avoided? ...
https: www.jianshu.com p 8fc. including all the methods above in this link, have tried, or can not connect, anxious, for several days, please have a look? ...
Why does the pbft algorithm require N > = 3f + 1? or what happens when the primary node is a fault node? ...
how to serialize an object collection to RDD? in pySpark? for example: the simplest operation class test: data = 1 def __init__(self): self.property=0 def test2(self): print( hello ) if name = _ _ main__ : p1 = test() p2 = test()...