PYTHON：能夠從同一個班級中調用某種方法的必要條件是什麼？

Question

我覺得我錯過了這段代碼工作的主要部分，或者真的很奇怪。我已經包含了一個名爲「handle」的方法，該方法被傳遞給thread.start_new_thread作爲參數，但似乎這個方法沒有被識別/執行。即使在PythonWin編輯器中，鍵入「self」時也是如此。它通常會預先填充一個可識別的選項列表，並且該版本中不顯示句柄，但是在該文件的工作版本中，它在編輯器中顯示。

下面是代碼：

（大量進口到這裏）

class AppServerSvc (win32serviceutil.ServiceFramework): 
    _svc_name_ = "flaspsrv" 
    _svc_display_name_ = "Flash Policy Server" 
    _svc_description_ = "Initialize Flash Policy Server" 

    def __init__(self,args): 
     logging.basicConfig(filename='C:\\Uploads\\testing.log', level=logging.DEBUG, filemode='a', format='%(asctime)s %(levelname)s %(message)s') 
     win32serviceutil.ServiceFramework.__init__(self,args) 
     self.hWaitStop = win32event.CreateEvent(None,0,0,None) 
     socket.setdefaulttimeout(60) 

    def SvcStop(self): 
     self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING) 
     win32event.SetEvent(self.hWaitStop) 

    def SvcDoRun(self): 
     servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE, 
           servicemanager.PYS_SERVICE_STARTED, 
           (self._svc_name_,'')) 
     self.main() 

    def main(self): 
     try: 
      self.sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) 
     except AttributeError: 
      # AttributeError catches Python built without IPv6 
      self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
     except socket.error: 
      # socket.error catches OS with IPv6 disabled 
      self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
      self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) 
      logging.info('Listening on port 843') 
      self.sock.bind(('localhost', 843)) 
      self.sock.listen(5) 

     try: 
      while True: 
       thread.start_new_thread(self.handle, self.sock.accept()) 
     except socket.error, e: 
      logging.info('Error accepting connection: %s' % (e[1],)) 

    def handle(self, conn, addr): 
     logging.info('Temp2') 
     addrstr = '%s:%s' % (addr[0],addr[1]) 
     try: 
      logging.info('Connection from %s' % (addrstr,)) 
      with contextlib.closing(conn): 
       # It's possible that we won't get the entire request in 
       # a single recv, but very unlikely. 
       request = conn.recv(1024).strip() 
       if request != '<policy-file-request/>\0': 
        logging.info('Unrecognized request from %s: %s' % (addrstr, request)) 
        return 
       logging.info('Valid request received from %s' % (addrstr,)) 
       fo = file('flashpolicy.xml', 'rb') 
       conn.sendall(fo.read(10001)) 
       logging.info('Sent policy file to %s' % (addrstr,)) 
     except socket.error, e: 
      logging.info('Error handling connection from %s: %s' % (addrstr, e[1])) 
     except Exception, e: 
      logging.info('Error handling connection from %s: %s' % (addrstr, e[1])) 

if __name__ == '__main__': 
    win32serviceutil.HandleCommandLine(AppServerSvc) 

Answer 1

更改線路

thread.start_new_thread(self.handle, self.sock.accept()) 

到

thread.start_new_thread(self.handle, *self.sock.accept()) 

從文檔，此套接字方法返回一個元組(conn, address)，其中您的處理程序接受三個參數（包括對自身的引用）。

thread.start_new_thread的第二和第三個參數是應該被傳遞到與線程模塊中註冊的回調args（位置參數）和kwargs（關鍵字參數）。所以除非你解開socket.accept()的參數，你可能會收到Type Error。

因此，您需要先解壓返回元組self.socket，然後再傳遞作爲參數來處理。