What is the best way to repeatedly execute a function every x seconds?

I want to repeatedly execute a function in Python every 60 seconds forever (just like an NSTimer in Objective C or setTimeout in JS). This code will run as a daemon and is effectively like calling...

Interprocess communication in Python

What is a good way to communicate between two separate Python runtimes? Thing's I've tried: reading/writing on named pipes e.g. os.mkfifo (feels hacky) dbus services (worked on desktop, but too...

Python "name app = bottle.default_app() not defined" error

I'm using the Bottle framework for a simple application that I'm working on atm. I have my bottle library located in the folder "lib" and I call the bottle framework from the lib folder by "import...

FreeBSD rc script with output to file

I have this script below where I start a python program. The python program outputs to stdout/terminal. But I want the program to be started via rc script silently. I can start the and stop the...

Name duplicates previous WSGI daemon definition

I'm changing the domain name of a site. For a period I want the old domain name and the new domain name to point to the site. I'm running a Python Django site. My original Apache2 conf works...

Setting timelimit for sftp.get() of Paramiko module

I am using Paramiko's SFTP client to download a file from remote server to a client(i.e. get operation) The file to be transferred is a bit huge ~1GB. So I would like the get operation to timeout...

Advanced content filter for Postfix using spawn service

As stated in the Postfix Filter Readme, I would like to make a filter for the spawn service, preferably in Python, which I can define in master.cf like this: /etc/postfix/master.cf: #...

Docker "ERROR: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network"

I have a directory apkmirror-scraper-compose with the following structure: . ├── docker-compose.yml ├── privoxy │   ├── config │   └── Dockerfile ├──...

Stopping a Python Multiprocessing BaseManager 'serve_forever' server?

I have the following setup in Python 3.6 for interprocess communication: from multiprocessing.managers import BaseManager class MyManager(BaseManager): pass MyManager.register('get_instance',...

How to debug a failed systemctl service (code=exited, status=217/USER)?

I'm trying to add my first service on rhel7 (which resides in AWS/EC2), but - the service is not configured correctly - as I get: [[email protected] ~]$ systemctl status clouddirectd.service...

Ending non-daemon threads when shutting down an interactive python session

Please consider the code below: #! /usr/bin/env python3 import threading import time class MyThread(threading.Thread): def __init__(self): super().__init__() self._quit_flag...

Flask running in Docker. Need to rebuild every time

I'm trying to get my Flask Docker build to be able to switch from running uWSGI + Nginx for production to simply running flask run for local development. I have Flask running in development...

Job is not performed by APScheduler's BackgroundScheduler

I have a Django application that I'm running on Docker. I'm trying to launch an APScheduler scheduler when I run the docker container. I created a scheduler and I simply added it a job that I...

Docker: "driver failed programming external connectivity on endpoint testcontainer"

I am getting the below error while creating a python3 container in manjaro VMware: docker: Error response from daemon: driver failed programming external connectivity on endpoint testcontainer...

Understanding performance impact on a concurrent server because of GIL

I am bit confused with what is happening with my code below. I have created a concurrent server to find nth number in fibonacci series. Server creates a thread for each client connection and...

Dockerizing Django application: ModuleNotFoundError: No module named 'X"

I've been trying to follow this guide to Dockerize a project: Deploy and Run Django in Dokcer Container This is the base file structure: WFMBCM |-WFMBCM | |-__init__.py | |-__pycache__ |...

Visual Studio Code python debugging timeout

I'm following Microsoft's guide Getting Started with Python in VS Code, but can only run in debug mode once -- the following run will always hit a time out issue. This is the hello.py msg = "Hello...

ValueError: Namespace Gtk not available

When following the instructions 2. Getting Started — Python GTK+ 3 Tutorial 3.4 documentation Tries In [6]: import gi ...: gi.require_version('Gtk', '3.0') ...: from gi.repository import...

how to make cv2.videoCapture.read() faster?

My question : I was working on my computer vision project. I use opencv(4.1.2) and python to implement it. I need a faster way to pass the reading frame into image processing on my Computer(Ubuntu...

In PyCharm docker Interpreter tab is missing

I've installed *PyCharm Community edition 2020.1* in the windows machine & I've installed docker version i.e. 2.1.0.4 and use expose daemon which is shown in the image below: I've set up a Django...

Dockerfile for awscli

I am trying to create a docker file that will install awscli and run the command to list s3. Once the command is executed the container itself exits.I builrd the image with this command docker...

docker: Error response from daemon: Mounts denied: approving /path/to/file does not exist

My docker command: docker run -it --rm -v $(pwd):/mutcompute ens_net:v3 Gives me the following error: docker: Error response from daemon: Mounts denied: approving...

systemd service activation for Python script fails

I want to register a python script as a daemon service, executed at system startup and running continuously in the background. The script opens network sockets, a local log file and executes a...

Why is Flask-Cors not detecting my Cross-Origin domain in production?

My website has a separate server for the front-end and back-end, and so my back-end server needs to open up CORS permissions so that the front-end can request data from it. I am using Flask-Cors...

Using apache-airflow-providers-snowflake on airflow (no module named Snowflake)

I have installed package apache-airflow-providers-snowflake on airflow on docker and i am getting error No module named Snowflake Please refer attachment (check the error mentioned for the...

Subscribe to AWS Appsync using a Pytnon Websocket with IAM authorization not working

I followed these documents: https://aws.amazon.com/blogs/mobile/appsync-websockets-python/ https://docs.aws.amazon.com/general/latest/gr/sigv4-signed-request-examples.html to make a python...

Terraform timing out on a GitLab CI shared runner while creating a Google Cloud Run service

I'm trying to set up a pipeline using GitLab CI + Terraform to build a Docker image for a simple webapp, push it to the Google Cloud Registry, test it, deploy to a Cloud Run service, and then...

How to debug delivery status of AWS SNS from message ID?

I use AWS for sending emails and SMS messages. I know about failed email messages because of the mailer-daemon returned email. Recently, I stopped receiving SMS messages on my text phone, even...

Sagemaker deploy model with inference code and requirements

I trained a TensorFlow model and now I would like to deploy it. The data needs to be processed thus I have to specify one inference.py script and one requirements.txt file. When I deploy the...

Docker on Mac M1 gives: "The requested image's platform (linux/amd64) does not match the detected host platform"

I want to run a docker container for Ganache on my MacBook M1, but get the following error: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8)...