flask returns the following dictionary: { DiscountID : 1189048 , Value : 20.0000 , BeginDate : 2018-07-28 , EndDate : 2018-09-28 } the 20.0000 above has four zeros, and there are also four zeros when using {% for x in dict%}. H...
after specifying the db.session.add, it is not actually sent to the database for execution. If you need to get the inserted id during session, you need to execute db.session.flush manually is there any way to turn off this "feature " without manually...
description Python3 reports UnsupportedOperation when testing flask sources of topics and their own ideas Source: install and test flask according to Section 1.6.1 of "Python3 Web Crawler Development practice " idea: query flask documents-instal...
what has been implemented: write a website in flask, enter data in the form, click submit, and download a generated word. (using flask-wtf and send_file) but what I want to do now is to click submit and generate two different word for download. at...
allow users to set time zone display time according to the time zone set by the user after login (their own and others posting time, reply time and other different time zones set by different users will see the time of their own time zone after loggin...
problem description for example, I want to create a Wallet object after the User object is successfully session.commit (), and I may need to create another object after the Wallet object is successfully created. I don t want to use functions to encap...
the directory under the packaged dist file of vue looks like this: python: index.html but if it is normal to open index.html in dist directly in the browser, it means that there should be nothing wrong with the introduction path of static files...
Ladies and Gentlemen, when I was learning flask, I came across the concept of flash flash. Is this flash similar to the asynchronous meaning of ajax? When you heroes are designing the website, do you think this flash is easy to use or ajax is easy to use...
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...
I ran a shell script in flask, and the problem now is that this shell script takes a long time and causes the front-end web to become unresponsive during the run, so we have to wait until the script is finished. Is there any way to solve it? I ve tried ...
problem description try to do a hands-on project after learning the Flask framework. The function is to collect and use the hash decryption API exposed on the network to obtain plaintext when the server data is obtained through jQuery.get (), it is f...
SQLAdvisor ends! Error log: Invalid parameter number ...
the environment variable has been set and the initialization file has been created, why is it still prompted that the module cannot be found? (Flask-Practice) ydx@ydx-PC:$ ls app config config.py instance LICENSE.md README.md requirements.txt (Fl...
I have also checked some tutorials on the Internet. At present, I can start in vscode, but I just can t enter debug mode. I hope someone can explain my following questions . launch.json configuration code is as follows { "name": "...
see examples that define the model directly at the start of the program, such as _ _ init__.py, server.py. my idea is to define the model in the corresponding .py file and create it directly when needed. I don t know how to organize the project file a...
for example, if ansible executes some task, to trigger this task on the front-end page, how to tell the back-end to compare the specification, write an api? of get or post ...
when you follow the book FlaskWeb developer to Chapter 7 to adjust the project structure, there is a UserWarning: Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set warning using flask_sqlalchemy this is the config.py code from flask import F...
< H1 > python rookies say hello to all the bosses! Ask the boss questions! < H1 > < H1 > functions I need to implement < H1 > 1. Using the flask framework to provide web services is simply a few keystrokes and then some indication of status! Access ...
1. The modal box using bootstrap wants to be automatically completed in the input box, but the second match cannot be selected by using the up and down keys or mouse selection, and click the second option, the input box does not change as shown in the ...
excuse me: Will the css code report an error? For example, a property name or attribute value is miswritten, or the style is not written in the selector 1. div{ width:pink; display:noner; } 2. overflow:hidden; div{ width:100px; } does t...
how to set a picture to center vertically in the browser and scroll up and down when the picture is out of the screen <div class="file-wrapper"> <img class="file-position" src="1.jpg" alt=""> ...
for example: interface X { a: string } interface Y { X: X } class X implements X { public a: string = } const Y: Y = { X <----- } found that the X attribute reported an error when defining Y, and could not assign type "typeof...
data cannot be returned when using a jsonp request. Because the site has made restrictions, you can only request under this domain name to get the data. could you tell me how to solve this problem? or there are other cross-domain methods that can solve...
Yarn resource scheduler, there are few related materials. If you want to use yarn to build a resource scheduling, schedule and monitor kafka, zookeeper, mongo and other components, it is best to use python to implement the task submission of Yarn, but yo...