sending DNS queries asynchronously with asyncio and dnspython

Say I want to send various types of DNS queries (A, AAAA, NS, SOA, DNSKEY, NSEC3, DS, etc) for Alexa top 1M sites using dnspython. Doing this one by one would take a bit long, since I'm sending...

How to handle DNS timeouts with aiohttp?

The aiohttp readme says: If you want to use timeouts for aiohttp client please use standard asyncio approach: yield from asyncio.wait_for(client.get(url), 10) But that doesn't handle DNS...

Re-queue futures after exception with asyncio

I'm trying to figure out how to re-queue some asynchronous DNS requests that have timed out (I'm using uvloop and aiodns modules). Here's the code that I set up the loop...

Proxy Broker Error Use async with instead

I have downloaded an installed proxy broker as well as aiodns, maxminddb and aiohttp. I keep getting the error message below. Any idea why? I am using Anaconda Python 3 on windows. I've look...

Pip install from zip file on private server not installing requirements and when requirements met it does not find the package

Ive made a command line tool to manage some actions on the server-side and I want to easely distribute it for my coworkers using pip install from a private server we have for internal tools, and...

How should I configure Redis for Django Channels 2.0?

I'm getting an error sometimes when I run a Worker of Django Channels as Background Task. The task consumes an open third-party WebSocket with a library called Pysher, processes that data, and...

pip install numpy - doesn't install numpy on ec2

I'm having a blank brand spanking new aws ec2 container and trying to install pip in a virtual environment. The only issue is, it says installation successful, but no numpy...

asynchronous dns lookup, but results go to the same file

I have to do a large number of DNS NAPTR lookups (think thousands per minute). I run a Python script using dnspython, read a file and write back to another file. Request rate is ~ 300...

asyncio and aiohttp "Cannot connect to host"

I have a piece of code which checks whether domains from a list host a website or not. I'm running 100 parallel tasks which consume the domains from a queue. The issue I'm facing is that I get...

aiodns can't contact DNS servers error when running in OS X terminal

Following code snippet fetches multiple public DNS servers asynchronously. If script is executed in PyCharm it works perfectly and resolves all given resolvers with very few errors (~14 errors in...

aiohttp concurrent GET requests lead to ClientConnectorError(8, 'nodename nor servname provided, or not known')

I am stumped by a problem seemingly related to asyncio + aiohttp whereby, when sending a large number of concurrent GET requests, over 85% of the requests raise an...

Tracking dangling threads in python

I've got a python 3.7.2 asyncio based application. There is an endpoint exposing some thread info: threads_info = {} for thread in enumerate(): threads_info[thread.__str__()] =...

Zipfile fails to unzip files present in an NFS drive

Existing Workflow: Celery Task periodically pulls a zip file from S3 bucket to /tmp/ and zipfile extracts that to a new folder for processing. Challenge: The zip file being variable in size, made...

Autoscale celery workers having complex Celery Chains

I'm trying to draft out how autoscaling would work with celery having complex chain based workflows. Current Flow: 30 CSVs are downloaded (every 6 hours) then a celery group is created to monitor...

Importing the numpy c-extensions failed in MacOS

Importing the numpy c-extensions failed I am trying to use numpy in terminal, when i imported it it returned an error.But whe I import numpy in pytharm Python Console,it worked well.I have python...

Could not build wheels since package wheel is not installed

I am having this problem with wheels: 'Could not build wheels for ..., since package 'wheel' is not installed.' with several packages and I have no idea what to do since - as you can see in the...

Cannot install python program twint

I tried installing twint via pip and it seems to have installed correctly but isn't available to run: [email protected]:~$ mkdir ~/twint [email protected]:~$ cd ~/twint/ [email protected]:~/twint$ pip3 install...

Building Wheel For Pycares (Setup.Py) Error

This is my first time ever posting to Stack Overflow, so my apologies for any inadvertent cringe. I'm attempting to install twint on a Macbook Pro (late 2013) running macOS Mojave version...

Failed to run TA-lib Python on Heroku

I want to deploy an app using Heroku but it did not manage to build it. See my build logs under this message. It looks that my problem is that it cannot load/install Ta-Lib (package that I want to...

Problem Importing Python Twint Module to Jupyter Notebook - ModuleNotFoundError: No module named 'twint'

When I try to import the twint package (https://pypi.org/project/twint/) to Jupyter Notebook, I get an error message. import twint ModuleNotFoundError Traceback (most recent...