I’ve run into an issue after following the SqlAlchemy guide here. Given the following simplified module: That I am attempting to build a query using: Why am I getting the following error? I was pretty sure I’d specified the two foreign key relationships? Update: I’ve tried the following comb…
python: subprocess returns nothing when running scripts which take longer time
Beginner here with subrpocess problem: The below line works fine when I run both the scripts with less data which takes around 10-20minutes, however with bigger data to be processed the subprocess returns nothing once both the scripts are completed (lets say in an hour). Also: Often with lesser data, it behav…
Dataframe increase speed of for loop for set value of column
I have dataframe from pandas (import pandas as pd) I want count +1 in ‘C3’ after rising edges (rising edges start when C1 =1 and C2=0) I tried with iterrow() for a dataframe with 300000 row, it’s little bit slow, does it have a simple way to make it more faster? Thanks a lot for your help! A…
Unable to update database in Stripe webhook
I have a mongodb database tracking if a user has paid through stripe. Once a user pays, I would like to change the database from False to True. However, even though my webhook seems to be working on the Stripe dashboard, the database isn’t updating. Additionally, if I add a print statement it doesn̵…
What are ‘population energies’?
In scipy.optimize.differential_evolution, the convergence criteria are that: This begs the question, what are ‘population energies’ please? This could be a follow up question to: Explain the intuition for the tol paramer in scipy differential evolution I tried looking in the code, but I got: So a …
non fixed rolling window
I am looking to implement a rolling window on a list, but instead of a fixed length of window, I would like to provide a rolling window list: Something like this: and the result would be: 6.67 is calculated as average of 3 elements 10, 2, 8. I implemented a slow solution, and every idea is welcome to make it
module ‘qrcode’ has no attribute ‘make’
While integrating python library qrcode==6.1 with django==3.1.2. I have been trying to generate a qrcode which will contain the URL links for my other websites. Models.py But It always display an error saying that module ‘qrcode’ doesnot contain any attribute named ‘make()’. I want to …
os unable to load image pygame.error: Couldn’t open imgspipe.png
source code : https://github.com/techwithtim/NEAT-Flappy-Bird line 28 – 31 (tech with tims flappy bird deep learning ai) i at first thought it was a local problem but after fiddling with python and uninstalling installing and reinstalling it i can conclude it is almost certainly not that. here’s t…
Error while running CNN for 1 dimensional data in R
I am trying to run 1 dimensional CNN in R using keras package. I am trying to create one-dimensional Convolutional Neural Network (CNN) architecture with the following specification But it is giving me following error Error in py_call_impl(callable, dots$args, dots$keywords) : ValueError: Negative dimension s…
Unable to import module ‘lambda_function’: No module named *
I am trying to run a python lambda function that uses additional packages. However whenever I upload the .zip file to the lambda console I get the error: I followed these instructions: https://docs.aws.amazon.com/lambda/latest/dg/python-package.html#python-package-dependencies which told me to make sure my pa…