Python multi-threaded, multi-Process code example

There are two ways of multithreading: Thread and threading

The scenario used here is a sample of how the map data is split into multiple threads and the progress is written Codis

This is an example of thread : the main process of thread does not wait for threads

ImportThread,math,threading,multiprocessing,os,timedefWritetocodis (prefix,key_list,result_map):#client = Bfdcodis ("xxx",)Begin =Int (time.time ()) forKeyinchkey_list:PrintKey#client.set (prefix + key, Result_map[key])        #client.expire (prefix + key, 1 * 3600)End =Int (time.time ())#Assign keyGidtosid={1:2,3:4}total_key=Len (gidtosid) Gap= Int (Math.ceil (float (total_key)/process_num)) Keys=Gidtosid.keys () forIinchRange (0,process_num): Thread.start_new_thread (Writetocodis, (G2s_prefix,keys[i*gap: (i+1) *gap],gidtosid))#T.start ()Time.sleep (10)

Threading will wait for the thread to execute

 for inch Range (0,process_num):    t=threading. Thread (target=writetocodis,args= (g2s_prefix,keys[i*gap: (i+1) *gap],gidtosid))    T.start ()

This is an example of a multi-process

 for inch Range (0,process_num):     = multiprocessing. Process (target=writetocodis,args= (g2s_prefix,keys[i*gap: (i+1) *gap],gidtosid))    P.start ()

Python multi-threaded, multi-Process code example