Miracleyoo miracleyoo

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

A personal diary of DataFrame munging over the years.

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

This is an English description of the .PMX file format used in Miku Miku Dance (MMD).

PMX is the successor to the .PMD format (Polygon Model Data).

This is work-in-progress! Please leave feedback in the comments.

注意：本文内容适用于 Tmux 2.3 及以上的版本，但是绝大部分的特性低版本也都适用，鼠标支持、VI 模式、插件管理在低版本可能会与本文不兼容。

启动新会话：

tmux [new -s 会话名 -n 窗口名]

恢复会话：

A list of useful commands for the FFmpeg command line tool.

	import numpy as NP
	import math

	def isclose(x, y, rtol=1.e-5, atol=1.e-8):
	return abs(x-y) <= atol + rtol * abs(y)

	def euler_angles_from_rotation_matrix(R):
	'''
	From a paper by Gregory G. Slabaugh (undated),
	"Computing Euler angles from a rotation matrix

	import numpy as np
	from keras.models import Sequential
	from keras.layers.core import Activation, Dense
	from keras.optimizers import SGD

	X = np.array([[0,0],[0,1],[1,0],[1,1]], "float32")
	y = np.array([[0],[1],[1],[0]], "float32")

	model = Sequential()
	model.add(Dense(2, input_dim=2, activation='sigmoid'))

	# This code is based on tutorial by slicktechies modified as needed to use oauth token from Twitch.
	# You can read more details at: https://www.junian.net/2017/01/how-to-record-twitch-streams.html
	# original code is from https://slicktechies.com/how-to-watchrecord-twitch-streams-using-livestreamer/

	import requests
	import os
	import time
	import json
	import sys
	import subprocess

	#!/bin/bash
	#
	# EDIT: this script is outdated, please see https://forums.developer.nvidia.com/t/pytorch-for-jetson-nano-version-1-6-0-now-available
	#
	sudo apt-get install python-pip

	# upgrade pip
	pip install -U pip
	pip --version
	# pip 9.0.1 from /home/ubuntu/.local/lib/python2.7/site-packages (python 2.7)

	import os
	import yaml
	import logging.config
	import logging
	import coloredlogs

	def setup_logging(default_path='logging.yaml', default_level=logging.INFO, env_key='LOG_CFG'):
	"""
	\| @author: Prathyush SP
	\| Logging Setup