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what does [:, :, ::-1] mean in python?

By : user2174515
Date : October 17 2020, 08:10 PM
Hope this helps This is numpy-specific and will not work for most python objects. The : means "take everything in this dimension" and the ::-1 means "take everything in this dimension but backwards." Your matrix has three dimensions: height, width and color. Here you're flipping the color from BGR to RGB. This is necessary because OpenCV has colors in BGR (blue/green/red) order, while most other imaging libraries have them in RGB order. This code will switch the image from OpenCV format to whatever format you'll display it in.
code :

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Cannot import open cv2 in python. Error: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel

By : thecodeman1987
Date : March 29 2020, 07:55 AM
seems to work fine I was also facing the same issue, 2 things which solved my problem are

Setting Python Executable Path in Atom Package (i.e. Autocomplete-Python) with Anaconda/Miniconda Python

By : Jack
Date : March 29 2020, 07:55 AM
around this issue I am having a tough time managing paths. , Open a python environment and run:
code :
import sys


Ansible + Ubuntu 18.04 + MySQL = "The PyMySQL (Python 2.7 and Python 3.X) or MySQL-python (Python 2.X) module is re

By : Taylor Tang
Date : March 29 2020, 07:55 AM
Any of those help I’m seeing the above message on multiple playbooks using Ansible 2.8 on Ubuntu 18.04. In the interests of simplicity I’ve reproduced it using this basic playbook for a single node Drupal server. https://github.com/geerlingguy/ansible-for-devops/tree/master/drupal; this playbook works fine on earlier versions of ubuntu, but not on 18.04 which I understand includes python3 by default. , Your remote host is telling you:
code :
- name: Make sure pymysql is present
  become: true # needed if the other tasks are not played as root
    name: pymysql
    state: present

How to easily distribute Python software that has Python module dependencies? Frustrations in Python package installatio

By : emily
Date : March 29 2020, 07:55 AM
it fixes the issue We also develop software projects that depend on numpy, scipy and other PyPI packages. Hands down, the best tool currently available out there for managing remote installations is zc.buildout. It is very easy to use. You download a bootstrapping script from their website and distribute that with your package. You write a "local deployment" file, called normally buildout.cfg, that explains how to install the package locally. You ship both the bootstrap.py file and buildout.cfg with your package - we use the MANIFEST.in file in our python packages to force the embedding of these two files with the zip or tar balls distributed by PyPI. When the user unpackages it, it should execute two commands:

Python OSX $ which Python gives /Library/Frameworks/Python.framework/Versions/2.7/bin/python

By : Eduard Casas
Date : March 29 2020, 07:55 AM
I wish this helpful for you It is just fine. Python may be installed in multiple places in your computer. When you get a new Mac, the default python directory may be
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