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[RxJS] Logging a Stream with do()

To help understand your stream, you’ll almost always want to log out some the intermediate values to see how it has progressed during its lifespan. This lesson teaches you how to use do to log values in the middle of the stream without having an impa…

[RxJS] Toggle A Stream On And Off With RxJS

This lesson covers how to toggle an observable on and off from another observable by showing how to use a checkbox as a toggle for a stream of data. <!DOCTYPE html> <html> <head> <script src="https://npmcdn.com/@reactivex/rxjs@5.…

[RxJS] Stopping a Stream with TakeUntil

Observables often need to be stopped before they are completed. This lesson shows how to use takeUntil to stop a running timer. Then we use the starting stream and the stopping stream together to create a simple stopwatch. const Observable = Rx.Obser…

[RxJS] Starting a Stream with SwitchMap & switchMapTo

From an event map to another event we can use switchMap(), switchMap() accept an function which return an obervable. The following code: When you click the button, it will start a interval to console out the count... const Observable = Rx.Observable;…

[RxJS] Completing a Stream with TakeWhile

Subscribe can take three params: subscribe( (x)=> console.log(x), err=> console.log(err), ()=> console.log('complete') ); If we want to stop the progame at some condition, so we need to notify complete function, which is the third param in subscr…

python logging colorlog

import logging LOG_LEVEL = logging.NOTSET LOGFORMAT = "[%(log_color)s%(levelname)s] [%(log_color)s%(asctime)s] %(log_color)s%(filename)s [line:%(log_color)s%(lineno)d] : %(log_color)s%(message)s%(reset)s" import colorlog logging.root.setLevel(LO…

python日志模块---logging

1.将日志打印到屏幕 import logging logging.debug('This is debug message---by liu-ke') logging.info('This is info message---by liu-ke') logging.warning('This is warning message---by liu-ke') 默认情况下,logging将日志打印到屏幕,日志级别为WARNING:日志级别大小关系为:CRITICAL > ERROR > WARN…

python logging模块 basicConfig配置文件

logging.basicConfig(level=log_level, format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s', datefmt='%a, %d %b %Y %H:%M:%S', filename='parser_result.log', filemode='w') logging.basicConfig函数各参数: filename: 指定日志文件名 filemode: 和fil…

python中利用logging包进行日志记录时的logging.level设置选择

之前在用python自带的logging包进行日志输出的时候发现有些logging语句没有输出,感到比较奇怪就去查了一下logging文档.然后发现其在设置和引用时的logging level会影响最后的输出.logging包默认对输出分成了6个等级: 这里的分值就代表了相应关键字出现的等级高低,NOTSET最低,CRITICAL最高.高等级的语句会覆盖低等级的语句. 一般我们用logging的时候会先在主程序配置一个logging类的格式,然后在子程序中直接引用即可(举个例子).如果我们在设置…

logging

#coding=utf8 import sys, logging   logging.basicConfig(level=logging.INFO,                     format='levelname:%(levelname)s filename: %(filename)s '                            'outputNumber: [%(lineno)d]  thread: %(threadName)s output msg:  %(mess…