1、验证码生成案例：

#!/usr/bin/env pythonimport randomcode=[]for i in range(6):    if i == random.randint(1,5):         code.append(str(random.randint(1,9)))    else:        temp = random.randint(65,90)        code.append(chr(temp))  #chr转化成字母print(''.join(code))  #格式化成字符串

 

2、线程和进程对比

from multiprocessing import Process,Queueimport threadingdef run(info_list,n):    info_list.append(n)    print(info_list)info = []if __name__ == '__main__':    for i in range(12):        p = Process(target=run,args=[info,i])        p.start()print('--------------------------')if __name__ == '__main__':    for i in range(12):        p = threading.Thread(target=run, args=[info, i])        p.start()