def validate(num):#判斷輸入是否非法
 try:
 num=int(num)
 except:
 say("非法輸入，請重新輸入")
 return False
 return True

import random
import pyttsx
#print(random.randint(0,9))


def say(s):
 engine=pyttsx.init()
 engine.setProperty('voice','HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Speech\\Voices\\Tokens\\TTS_MS_ZH-CN_HUIHUI_11.0' )
 engine.setProperty('rate', 250)
 engine.say(s)
 engine.runAndWait()
def validate(num):#判斷輸入是否非法
 try:
 num=int(num)
 except:
 say("非法輸入，請重新輸入")
 return False
 return True

def askadd(a,b,c):#詢問加法
 if a+b==int(c):
 print("答對了")
 say("答對了")
 else:
 print("答錯了,正確答案是:"+str(a+b))
 say("答錯了,正確答案是:"+str(a+b))
def asksub(a,b,c):#詢問減法
 if a==int(c):
 print("答對了")
 say("答對了")
 else:
 print("答錯了,正確答案是:"+str(a))
 say("答錯了,正確答案是:"+str(a))


if __name__ == "__main__":
 k=1#統(tǒng)計題數(shù)
 while True:
 a=random.randint(1,20)
 b=random.randint(1,20)
 #a，b是加法中的兩個加數(shù)；a+b被減數(shù)，b減數(shù)
 #a，b的范圍為1-20
 rule=random.randint(0, 1)#隨機生成加減法，1 is plus,0 is sub
 if rule==1:
 say('第'+str(k)+'題:'+str(a)+'+'+str(b)+'=')
 c=input('第'+str(k)+'題:'+str(a)+'+'+str(b)+'=')
 while not validate(c):
 c=input(str(a)+'+'+str(b)+'=')
 askadd(a, b, c)
 k=k+1
 continue
 else:
 say('第'+str(k)+'題:'+str(a+b)+'減'+str(b)+'=')
 c=input('第'+str(k)+'題:'+str(a+b)+'-'+str(b)+'=')
 while not validate(c):
 c=input(str(a+b)+'-'+str(b)+'=')
 asksub(a, b, c)
 k=k+1
 continue