代码:
 
import os,time,sys 
o="c:windowssystem32shutdown -s" 
print "Input the hours and minutes:" 
h=input() 
mt=input() 
t=time.localtime() 
y,m,d,h1,mt1=t[:5] 
if(h<h1): 
    print "The time has been pass" 
elif(h==h1 and mt<mt1): 
    print "The time has been pass" 
hm=(y,m,d,h,mt)
while 1: 
    t= time.localtime(time.time()) 
    a=t[:5] 
    if(a==hm): 
        print "Time is coming" 
        os.system(o) 
        break 
    time.sleep(31)