https://www.wireshark.org/download/win64/ ...
product=1i=1whilei<6:product=i*productprint('i=%d'%i,end='')print('product=%d'%product)i+=1print('阶乘的结果=%d'%product)print()输出i=1product=1i=2p...
sum=0number=int(input('请输入整数:'))#递增for循环,从小到大打印出数字print('从小到大排列输出数字:')foriinrange(1,number+1):sum+=i#设置sum为i的和print('%d'%i,end='')#设置输出连加的算式ifi&...
例1importsys#声明字符串数组并初始化newspaper=['1.北京晚报','2.作家文摘','3.参考消息','4.证券报','5.不需要']#字符串数组的输出foriinrange(5):print('%s'%newspaper[i],end='')try:choice=i...
sum=0number=1whileTrue:ifnumber==0:breaknumber=int(input('数字0为结束程序,请输入数字:'))sum+=numberprint('目前累加的结果为:%d'%sum)输出数字0为结束程序,请输入数字:9目前累加的结果为:9数字0为结...
例1defchange(data):data[0],data[1]=data[1],data[0]print('函数内交换位置后:')foriinrange(2):print('data[%d]=%3d'%(i,data[i]),end='')#主程序data=[16,25]print(...
definterpolation_search(data,val):low=0high=len(data)-1print('查找过程中......')whilelow<=highandval!=-1:mid=low+int((val-data[low])*(high-low)/(d...
importrandomval=0data=[5,6,7,8,9]whileval!=-1:find=0val=int(input('请输入查找键值(1-9),输入-1离开:'))foriindata:ifi==val:print('在第%3d个位置找到键值[%3d]'%(i+1,i))...
[root@bogon~]#stat-c%sinstall.log26593 ...
#!/usr/bin/python3#Thisisserver.pyfileimportsocket#createasocketobjectserversocket=socket.socket(socket.AF_INET,socket.SOCK_STREAM)#getlocalmach...
#!/usr/bin/python3importreline="Catsaresmarterthandogs"matchObj=re.match(r'(.*)are(.*?).*',line,re.M|re.I)ifmatchObj:print("matchObj.group():",m...
thread模块#!/usr/bin/python3import_threadimporttime#Defineafunctionforthethreaddefprint_time(threadName,delay):count=0whilecount<5:time.sleep(d...
movies.xml<collectionshelf="NewArrivals"><movietitle="EnemyBehind"><type>War,Thriller</type><format>DVD</format...
例子一#definealistmy_list=[4,7,0,3]#getaniteratorusingiter()my_iter=iter(my_list)##iteratethroughitusingnext()#prints4print(next(my_iter))#prints7p...
一 #Initializethelistmy_list=[1,3,6,10]#squareeachtermusinglistcomprehension#Output:[1,9,36,100][x**2forxinmy_list]#samethingcanbedoneusinggenerat...
版权申明:本文为博主窗户(Colin Cai)原创,欢迎转帖。如要转贴,必须注明原文网址 http://www.cnblogs.com/Colin-Cai/p/7899171.html 作者:窗户 QQ:6679072 E-mail:6679072@qq.com bp神经网络为大家所熟知,推导中使用了基于梯度下降。而对于更为一般的情况,解决问题的出发点是建立一组函数fi(Ci,Xi), i=1..n,n为输出的个数,也就是函数的个数,对于每个fi,Ci是一个参数向量,Xi是一个输入向量,我们的目标就是为这组函数中的每个fi找到最合适的Ci。 ...