Many people state that kivy is slow. While this may be true it is mostly due to that python is slow to run on android devices.Thus it is in the programmer's hands to properly optimize their code so as to create a performant application.
Most of the lag on android devices runing kivy apps arise due to widget creation. Widget creation remains the slowest step in a kivy app. Here are some of the methods that I follow to optimize my apps and ensure I can hit 60fps even on old devices
| from mpi4py import MPI | |
| import numpy as np | |
| comm = MPI.COMM_WORLD | |
| rank = comm.Get_rank() | |
| nprocs = comm.Get_size() | |
| DEBUG = 0 | |
| def move_info(info2move): |
This is a guide to Vim Script development for Python developers. Sample code for the various expressions, statements, functions and programming constructs is shown in both Python and Vim Script. This is not intended to be a tutorial for developing Vim scripts. It is assumed that the reader is familiar with Python programming.
For an introduction to Vim Script development, refer to usr_41.txt, eval.txt and Learn Vimscript the Hard Way
For a guide similar to this one for JavaScript developers, refer to Vim Script for the JavaScripter
This guide only describes the programming constructs that are present in both Python and Vim. The constructs that are unique to Vim (e.g. autocommands, [key-mapping](https://vimhelp.org/map.txt.html#key-m
This gist will show how to setup a generic SBC Debian / Ubuntu install as a headless Bluetooth A2DP audio sink. This will allow your phone, laptop or other Bluetooth device to play audio wirelessly through a Rasperry Pi.
This is forked from another gist specific to the Raspberry Pi on Stretch. A required package isn't in Ubuntu's repos, so in this gist we build it from scratch.
Tested to be working on Armbian/Ubuntu/Debian images of the Orange Pi Zero, ODROID XU4, ODROID N2, and Atomic Pi.
| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| helpDoc = ''' | |
| Add Page Number to PDF file with Python | |
| Python 给 PDF 添加 页码 | |
| usage: | |
| python addPageNumberToPDF.py [PDF path] | |
| require: |
| # -*- coding: utf-8 -*- | |
| import os | |
| import numpy as np | |
| import subprocess as sp | |
| import re | |
| def polar(afile, re, *args,**kwargs): | |
| """calculate airfoil polar and load results |
| Copyright 2020 Aubrey Taylor | |
| Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTH |
| import os | |
| from collections import namedtuple | |
| Section = namedtuple('Section', ['line', 'fg', 'bg']) | |
| PARTS = 3 | |
| def cwd_sec(): | |
| cwd = $PWD | |
| if cwd.startswith($HOME): |
| model name : Intel(R) Xeon(R) CPU @ 2.30GHz | |
| Loading arrays to memory | |
| Loading speed: 0.670GB/s | |
| timing bandwidth for sequential memory access | |
| bandwidth: 9.0 GB/s | |
| n_workers=2 (threads) |
