Why is the re module trying to import enum.IntFlag?

How is it possible that a core module is importing a non-existent name from another core module? Specifically, the re module importing enum.IntFlag *Ways to Reproduce* It can be reproduced by...

How to work with pyenv, virtualenv and pipenv?

I was looking for a version manager for Python similar/equal to RVM (for Ruby), I found pyenv but it is merely a switcher so I'd need to combine it with virtualenv (my understanding so far), a...

Python - Beautiful Soup Returning Errors

I want to extract the covers for different journals on the cambridge university press website. The I want to save it as it's online ISSN. The following code works but after one or two journals, it...

Bleak-Detector Not Installing

I need to Install Bleak-Detector for Scan Memory Leaks. I have already installed Mitproxy 4.0.4. But Installation of Bleak-Detector Failed. Can Anyone Explain why this happen...

How to plot a matplotlib line plot using colormap?

How can I create a lineplot using python matplotlib in such a way that the color of the line varies in respect of another series? For a simple example: import numpy as np import matplotlib.pyplot...

Real Time Disparity Map Project: Colormap Disparity not Recognized (OpenCV Python StereoBM)

My python code below is intended to get a real time disparity map with decent accuracy. Here is my code: import cv2 import numpy as np import sys from matplotlib import pyplot as plt cap =...

Apache Arrow Plasma Client - Can't connect to memory store (UnsatisfiedLinkError)

I'm trying to use the Java API for Apache Arrow to connect to a memory store. I've done this in Python, successfully, using the Python API by following the guide here. I've also looked at the C++...

How to use ray in a docker swarm

I'm trying to set up a cluster with one ray-head and two ray-workers with docker swarm. I have three machines for this, one running the ray-had and two each one ray-worker. The cluster comes up...

Workers not being launched on EC2 by Ray

I am using the Ray module to launch an Ubuntu (16.04) cluster on AWS EC2. In the configuration I specified min_workers, max_workers and initial_workers as 2, because I do not need any auto-sizing....

Efficient data transfer from REST API server to Ray Pipeline

I have a ML pipeline with multiple Ray (https://ray.readthedocs.io/en/latest/) actors (1 Tensorflow, a few preprocessing steps and a few post processing) connected to each other. I would now like...

Error while initializing Ray on an EC2 master node

I am using Ray to run a parallel loop on an Ubuntu 14.04 cluster on AWS EC2. The following Python 3 script works well on my local machine with just 4 workers (imports and local initializations...

Plotting colours by array index with pcolormesh

I want to use pcolormesh to plot data with the jet colormap. I want to control the colour stretch by breaking the data spread into intervals and assign a colour to each interval. Then I want the...

Python Script for Art Museum Installation intermittently locks up, Removing Thermal Camera Sensor read function seems to work?

I have a python script for an installation in an art museum that is meant to run continuously playing sounds, driving an LED matrix, and sensing people via OpennCV and a thermal camera. Each of...

How to read and update an object in python plasma?

I just discovered plasma https://arrow.apache.org/docs/python/plasma.html#putting-and-getting-python-objects and would like to store an object, get it, update and write back to the store. Is it...

Ray Execution in Python

I have installed Ray to increase the performance of Caffe Object Detection code in Intel® Celeron(R) CPU N3060 @ 1.60GHz × 2. I am encountering the following...

How to build and install yugabyte db version 2.0.6.0 from github source?

a) downloaded yugabyte-db.tar.gz from github b) created directory /opt/yugabyte/yugabyte-2.0.6.0 c) extracted to /opt/yugabyte d) made /opt/yugabyte/yugabyte-master as present working directory e)...

Extracting leaf indices that each sample was assigned to in the forest from random forests (RF) in R

I'm trying to transpile code from Python to R in order to do supervised dimensionality reduction with Random Forests and UMAP following instructions from this blog post. I need to get an array...

'buildozer android debug deploy run' gives error

I am using kivy to build an app. I am following these instructions to create a package for Android using Buildozer. But when I run : buildozer android debug deploy run I get the following...

How to create ObjectID from its string representation [pyarrow]

I am saving a Python object to the Plasma store in one client, and want to load it in another. My idea was to pass the ObjectID as part of an HTTP request. So I have something like: import...

Are there any python GUI toolkits that play nice with Dark Mode?

All I know at the moment is tkinter. When I start one of my GUI applications in dark mode the check boxes and radio buttons aren't any discernibly different whether they are marked or unmarked and...

More perceptually uniform colormaps?

I am an advocate of using perceptually uniform colormaps when plotting scientific data as grayscale images and applying false colorings. I don't know who invented these, but these colormaps are...

Speeding up PyArrow Parquet to Pandas for dataframe with lots of strings

I have a pandas DataFrame I want to query often (in ray via an API). I'm trying to speed up the loading of it but it takes significant time (3+s) to cast it into pandas. For most of my datasets...

gstreamer: No such element or plugin 'v4l2sink'

The problem I am trying to execute a script. Part of it needs to execute v4l2sink. I tried to execute this gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video1 & mplayer -tv...

Why does my commandline within PyCharm not recognize bash commands?

I am trying to copy something to my clipboard for a project in Python. I cannot use modules to copy to my clipboard because of a bug with KDE Plasma. Instead of trying to fix that problem, I...

How to properly create an apache plasma store from within a python program?

If I run the following as a program: import subprocess subprocess.run(['plasma_store -m 10000000000 -s /tmp/plasma'], shell=True, capture_output=True) and then run the program that uses the plasma...

How can I set up a Ray (a distributed programming framework) and Flask app on AWS Elastic Beanstalk?

Background I've been trying, unsuccessfully, to implement Ray (https://github.com/ray-project/ray) into the production version of our AI API. Essentially, we want to use it to speed up one of our...

Pygame window does not responding in fullscreen mode

So when i use window mode in pygame everything works fine, but if i use fullscreen mode my screen becomes black and i can't draw anything or update the screen (There's no any errors in the console...

How to write a huge 2D NumPy array into a buffer

I have a huge 2D numpy array (dtype=bool) and a buffer and I would like to write this 2D array into the buffer. Currently, I do the following, # Python version 3.7.7, NumPy version 1.18.5 # shape...

only size-1 arrays can be converted to Python scalars - what is wrong?

What is wrong with this code, please. I obtained an error: only size-1 arrays can be converted to Python scalars Code: import math import numpy as np # Electrostatic electron waves in plasmas e...

How to clear objects from the object store in ray?

I am trying out the promising multiprocessing package ray. I have a problem I seem not be able to solve. My program runs fine the first time, but at a second run this Exception is raised on the...