python - Creating a new thread that _really_ runs in parallel -

i have following code in class:

def persistdbthread(self):     while true:         thread(target=self.__persistdb)         time.sleep(10)  def  __persistdb(self):     open(self.authdbpath, 'w') outfile:         json.dump(self.authdb, outfile) 

the thread gets started in __ main__ start thread blocking in main execution.

why this? know gil - it's in same process. task switching happens in same process in micro-thread, why doesn't switch back?

thanks!

sorry asking:

def persistdbthread(self):     thread(target=self.__persistdb).start()   def  __persistdb(self):     while true:         time.sleep(10)         outfile = open(self.authdbpath, 'w')         json.dump(self.authdb, outfile) 

you calling __persistdb soon. use target=self.__persistdb no parentheses @ end. when include parentheses, calling function before threading call made. without parentheses, pass function argument called later.

you need call resulting thread object's start method. described in the documentation, should read.

also, don't run in while true loop. create endless numbers of threads call thread again , again. google or search stackoverflow "python threading example" find many examples of right way use threading module, e.g., here.