Flask

问题 So I'm trying to connect a Flask server to a front end create react app. Right now I just want to verify that I can send json between the two. Below is the code for each and a bit more description on the errors. Create React App fetch import React, { Component } from 'react'; import './App.css'; export default class App extends Component { constructor() { super() this.state = { pyResp: [] } } fetchHelloWorld() { console.log("fetching python localhost"); fetch('http://localhost:5000/', {

问题 So I'm trying to connect a Flask server to a front end create react app. Right now I just want to verify that I can send json between the two. Below is the code for each and a bit more description on the errors. Create React App fetch import React, { Component } from 'react'; import './App.css'; export default class App extends Component { constructor() { super() this.state = { pyResp: [] } } fetchHelloWorld() { console.log("fetching python localhost"); fetch('http://localhost:5000/', {

问题 So I'm trying to connect a Flask server to a front end create react app. Right now I just want to verify that I can send json between the two. Below is the code for each and a bit more description on the errors. Create React App fetch import React, { Component } from 'react'; import './App.css'; export default class App extends Component { constructor() { super() this.state = { pyResp: [] } } fetchHelloWorld() { console.log("fetching python localhost"); fetch('http://localhost:5000/', {

问题 I created an website with HTML/CSS completly on my own. Also use Javascript for events (click on button, ...). Now i want to connect an python script with it and more important, return the results from python to my website and display (use) them there. Consider something like this: Website with an input and button. If you click on the button a python script should run which returns if the input is an odd or even number (of course you dont need python for this specific case, but i want to do

问题 I have a function that crawls the web for data and computes a score for the search. However, this can take a while and sometimes the webpage times out before finishing execution. So I created a separate thread that executes the function and loading.html that tells the client that data is still being collected. Once the function ends in the thread, how do I reload the webpage to display output.html that displays the score. This is a simpler version of what I have so far: from flask import

问题 I have a function that crawls the web for data and computes a score for the search. However, this can take a while and sometimes the webpage times out before finishing execution. So I created a separate thread that executes the function and loading.html that tells the client that data is still being collected. Once the function ends in the thread, how do I reload the webpage to display output.html that displays the score. This is a simpler version of what I have so far: from flask import

问题 This question already has answers here : Flask view return error “View function did not return a response” (2 answers) Closed 1 year ago . I'm making a flask app that is supposed to generate a summary. However, flask is telling me that i have a function that doesn't return anything. I double checked and i can't find any function that isn't returning something. app = Flask(__name__) @app.route('/',methods=['GET']) def index(): return render_template('index.html') UPLOAD_FOLDER = '/path_to

问题 I have just started with Python, although I have been programming in other languages over the past 30 years. I wanted to keep my first application simple, so I started out with a little home automation project hosted on a Raspberry Pi. I got my code to work fine (controlling a valve, reading a flow sensor and showing some data on a display), but when I wanted to add some web interactivity it came to a sudden halt. Most articles I have found on the subject suggest to use the Flask framework to

问题 I have just started with Python, although I have been programming in other languages over the past 30 years. I wanted to keep my first application simple, so I started out with a little home automation project hosted on a Raspberry Pi. I got my code to work fine (controlling a valve, reading a flow sensor and showing some data on a display), but when I wanted to add some web interactivity it came to a sudden halt. Most articles I have found on the subject suggest to use the Flask framework to

问题 I have just started with Python, although I have been programming in other languages over the past 30 years. I wanted to keep my first application simple, so I started out with a little home automation project hosted on a Raspberry Pi. I got my code to work fine (controlling a valve, reading a flow sensor and showing some data on a display), but when I wanted to add some web interactivity it came to a sudden halt. Most articles I have found on the subject suggest to use the Flask framework to