直接或者间接继承 Error 或者 Exception 类 由开发者主动抛出自定义异常,在 Python 中使用 raise 关键字 class LeNumExpect(Exception): # 自定义异常需要继承 Exception 类 def __init__(self,leng): ''' 长度 ''' self.len = leng pass def __str__(self): return '您输入的姓名数据长度是'+str(sel...
在Python中,我们可以使用try...except语句来捕获和处理异常。 以下是一个简单的示例,展示了如何在网络编程中使用异常处理: importsocketdefconnect_to_server(server_address, port):try:# 创建socket对象client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 连接到服务器client_socket.connect((ser...
This greatly simplifies the code in the class and reduces complexity. If there’s an exception or you explicitly raise one yourself, you know .close() will take care of the cleanup. The methods Message._read() and Message._write() also contain something interesting: Python libclient.py #...
I am trying to develop a Plugin for PyCharm that uses the extension points of the Python Debugger. When I run my plugin, PyCharm opens, and when I try to use the debugger there, I get the following exception: 2024-04-24 11:03:41,145 [ 32603] WARN - #c.j....
5)万能异常:Exception,可以匹配所有种类的异常,最好不要直接万能匹配异常 View Code 6)多分支+Exception,注意Exception一定要放到except 其他异常的的后面 View Code 7)try...else,else会在被检测的代码块没有异常发生的情况下执行, else一定要与except连用,并且一定要放到多个except后面 ...
python之socket 一、初识socket socket 是网络连接端点,每个socket都被绑定到一个特定的IP地址和端口。IP地址是一个由4个数组成的序列,这4个数均是范围 0~255中的值(例如,220,176,36,76);端口数值的取值范围是0~65535。端口数小于1024的都是为众所周知的网络服务所保留的 (例如Web服务使用的80端口);最大的...
(self.ip, port))except Exception as e:print(e)finally:s.close()def start(self):remote_server = input("输入要扫描的远程主机:")self.ip = socket.gethostbyname(remote_server)ports = [i for i in range(1, 1025)]socket.setdefaulttimeout(0.5)# 开始时间t1 = datetime.now()# 设置多进程...
# 循环处理client_socket_listforclient_socketinclient_socket_list:try:handle_client(client_socket)except Exceptionase:print("---3 client_socket并无收到http请求到来",e)else:print("---4 client_socket收到http请求到来,并进行数据处理")client_socket.close()client_socket_list.remove(client_socket)if_...
万能异常 在python的异常中,有一个万能异常:Exception,他可以捕获任意异常 #万能异常处理list= ["hello","world"]try: list[3]exceptException as e:print("Error",e)#Error list index out of range AttributeError 试图访问一个对象没有的树形,比如foo.x,但是foo没有属性x ...
for clientSocket, clientAddr in g_clientinfoList: try: newData = clientSocket.recv(1024) except Exception as result: pass else: if newData: print('%s:%s' % (str(clientAddr), newData)) else: clientSocket.close() needDelInfoList.append((clientSocket, clientAddr)) ...