1、创建 def my_function(): #不含参函数 "返回2" #函数文档 return 2 def my_function2(name='deer'): #name为形参,'deer'为默认参数,为形参的初值 print('Hello '+name+'!') return ['Hello',name,'!'] def my_function3(a,b,*c): c为收集参数,往后的参数(关键字参数除外)全部用一个元组...
This section uses Python as an example to describe how to invoke a subfunction by using a function.For details about how to call APIs, see Calling APIs.An agency with the
''' function discription ''' function logit return values 1. 2. 3. 4. 5. 2.函数的定义 3.函数参数与作用域 函数参数 参考廖雪峰的Python教程,对python函数的参数可以分为必需参数,关键字参数,默认参数,不定长参数四种。其实这几种类型(除不定长参数外)并没有显示地标记,简单概括就是没有给定默认值的...
futures.append(future_pub)time.sleep(2)self.event.set()futures_completed=as_completed(futures)try:forfutureinfutures_completed:future.result()exceptExceptionase:print(f"An error occured in a thread: {e}")if__name__=="__main__":URLS=["https://docs.python.org/3/library/concurrency.html",...
Return the string obtained by replacing the leftmost non-overlapping occurrences of patterninstring by the replacement repl. If the pattern isn’t found, stringisreturned unchanged. repl can be a stringora function;ifitisa string,anybackslash escapesinit are processed. Thatis, \nisconverted to a...
python模块之sys和subprocess以及编写简单的主机扫描脚本 1.sys模块 sys.exit(n) 作用:执行到主程序末尾,解释器自动退出,但是如果需要中途退出程序,可以调用sys.exit函数,带有一个可选的整数参数返回给调用它的程序,表示你可以在主程序中捕获对sys.exit的调用。(0是正常退出,其他为异常) ...
Function:Version: 2013-05-02Author: CrifanContact: admin (at) crifan.com"""import re;def pythonReSubDemo():"""demo Pyton re.sub"""inputStr = "hello 123 world 456 nihao 789";def _add111(matched):intStr = matched.group("number"); #123intValue = int(intStr);addedValue = intValue...
MySQLDATE_SUB()Function ❮Previous❮ MySQL FunctionsNext❯ ExampleGet your own SQL Server Subtract 10 days from a date and return the date: SELECTDATE_SUB("2017-06-15", INTERVAL10DAY); Try it Yourself » Definition and Usage
EN// --需要引用 using System.Net 以及 using System.IO; ...
Using the PyPubSub class inclients/nodejs/client.jsone can listen for pubsub events and process them using node.js: functionprocess(payload){// ping-back?if(payload.stillalive){console.log("Got a ping-back");// Actual payload? process it!}else{console.log("Got a payload from PyPubSub...