flask - Python Fix Issues

Fix Python – Sending data from HTML form to a Python script in Flask

December 9, 2022 by Aky Patel

I have the code below in my Python script:
def cmd_wui(argv, path_to_tx):
“””Run a web UI.”””
from flask import Flask, flash, jsonify, render_template, request
import webbrowser
app = Flask(__name__)

@app.route(‘/tx/index/’)
def index():
“””Load start page where you select your project folder
or load histo….

Fix Python – Flask vs webapp2 for Google App Engine

December 8, 2022 by Aky Patel

I’m starting new Google App Engine application and currently considering two frameworks: Flask and webapp2. I’m rather satisfied with built-in webapp framework that I’ve used for my previous App Engine application, so I think webapp2 will be even better and I won’t have any problems with it.
However, there are a lot of good reviews of Flask, I rea….

Fix Python – How to print from Flask @app.route to python console

December 8, 2022 by Aky Patel

I would like to simply print a “hello world” to the python console after /button is called by the user.
This is my naive approach:
@app.route(‘/button/’)
def button_clicked():
print ‘Hello world!’
return redirect(‘/’)

Background: I would like to execute other python commands from flask (not shell). “print” should be the easiest case.
I be….

Fix Python – How to iterate through a list of dictionaries in Jinja template?

December 7, 2022 by Aky Patel

I tried:
list1 = [{“username”: “abhi”, “pass”: 2087}]
return render_template(“file_output.html”, list1=list1)

In the template:

{% for dictionary in list1 %}
{% for key in dictionary %}

Key

Value

Fix Python – Send data from a textbox into Flask?

December 6, 2022 by Aky Patel

I was wondering if there was a way to take something from a text box in the HTML, feed it into flask, then parse that data with Python. I was thinking this might involve some JS but I could be wrong. Any ideas?
….

Fix Python – How to stop Flask from initialising twice in Debug Mode? [duplicate]

December 3, 2022 by Aky Patel

This question already has answers here:

Why does running the Flask dev server run itself twice?

(7 answers)

Closed 3 years ago.

When building a Flask service in Python and setting the debug mode on, the Flask service will in….

Fix Python – Link to Flask static files with url_for

December 3, 2022 by Aky Patel

How do you use url_for in Flask to reference a file in a folder? For example, I have some static files in the static folder, some of which may be in subfolders such as static/bootstrap.
When I try to serve a file from static/bootstrap, I get an error. Categories python Tags flask, jinja2, python

Fix Python – Python Flask Intentional Empty Response

December 2, 2022 by Aky Patel

Is there a way to return a response (from make_response() object or similar) with certain properties so that it doesn’t render the page again and doesn’t do anything else either. I am trying to run a code on the server without generating any output
A simple ‘return None’ produces:
ValueError: View function did not return a response

This should b….

Fix Python – AssertionError: View function mapping is overwriting an existing endpoint function: main

December 1, 2022 by Aky Patel

Does anyone know why I can’t overwrite an existing endpoint function if i have two url rules like this
app.add_url_rule(‘/’,
view_func=Main.as_view(‘main’),
methods=[“GET”])

app.add_url_rule(‘//’,
view_func=Main.as_view(‘main’),
methods=[“GET”])

Traceback:
Traceback (most ….

Fix Python – What is the point of uWSGI?

November 30, 2022 by Aky Patel

I’m looking at the WSGI specification and I’m trying to figure out how servers like uWSGI fit into the picture. I understand the point of the WSGI spec is to separate web servers like nginx from web applications like something you’d write using Flask. What I don’t understand is what uWSGI is for. Why can’t nginx directly call my Flask application?….

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