callback

Plotly Dash – callback dash table on python doesnt trigger Question: I have an app with multiple pages, controlled from this index, in a new page I want to insert a dash table and assign some interactivity using callbacks. Take a basic dash table example (https://dash.plotly.com/datatable) and insert it into my app, but the callback …

Streamlit and Python, The problem of not using the return value of the function inside the other function and undesired path visual Question: The code: #Libraries import pandas as pd import numpy as np import matplotlib.pyplot as plt import os import fitz import io import streamlit as st global path_input_0 #HERE ASSIGNMENTS——————————- path_input_0="" path_input_last="" def …

Im trying to get a text from a tkinter entry and put it inside a dictionary but I get PY_VAR(some number) instead Question: the code below is part of a class. def expected_callback(self,expected_val_var,index,mode): dictionary[self.row][3] = expected_val_var def dataType callback(self,event): expected_val_var = StringVar() expected_val_var.trace("w",self.expected_callback) expected_val = Entry(self.root, width=20, textvariable= expected_val_var) expected_val.insert(0,"Expected value") expected_val.grid(row=self.row,column=self.col+2) Im trying to …

Output a graph and table from a single dash callback Question: I would like to generate a graph and table from a dash callback, but the code outputs one or the other. Below is the final part of the code. The data is filtered by chained callbacks (two drop-downs – LGA and SMA) and a …

How to print one log line per every 10 epochs when training models with tensorflow keras? Question: When I fit the model with: model.fit(X, y, epochs=40, batch_size=32, validation_split=0.2, verbose=2) it prints one log line for each epoch as: Epoch 1/100 0s – loss: 0.2506 – acc: 0.5750 – val_loss: 0.2501 – val_acc: 0.3750 Epoch 2/100 …

Why doesn't a callback get executed immediately upon calling yield in Scrapy? Question: I am building a web scraper to scrape remote jobs. The spider behaves in a way that I don’t understand and I’d appreciate it if someone could explain why. Here’s the code for the spider: import scrapy import time class JobsSpider(scrapy.Spider): name …

A command does not finish when executed using Python Paramiko exec_command Question: I’ve got a Python program which sits on a remote server which uploads a file to an AWS bucket when run. If I ssh onto the server and run it with the command sudo python3 /path/to/backup.py it works as expected. I’m writing a …

KivyMD callback(self,instance) example Question: I am using a floating action button speed dial in kivymd. I have added the data dictionary and want to add separate functions to all the sub buttons. For that I have to use callback. Can anyone tell me by an example how do I do it? Kv code: MDFloatingActionButtonSpeedDial: callback: …

Is there any way to pass a block argument in Python without defining it as a function first? Question: in Ruby, a block argument works like this: def foo_bar (&block) block.(4) end foo_bar do |x| puts x puts x * 2 end =begin 4 8 =end I’ve seen the following equivalent in Python, but I …

How can I properly call a method from its callback method within a class? Question: I Have a code with two functions. Function ‘send_thread’ and Function ‘receive_thread’ which is the callback of ‘send_thread’. What I want to do is to run ‘send_thread’, this activates ‘receive_thread’ and once it’s over repeat it all again. To do …