def num(a, b):
    a = int(a)
    b = int(b)
    result = a / b
    print(result)

try:
    #程序代碼
except [errorNmae]:
    #出現(xiàn)異常后的處理代碼
[else:]
    #當(dāng)try中代碼沒(méi)有問(wèn)題時(shí)，會(huì)執(zhí)行else。但是try中不能有retrun
[finally:]
    #最后一定會(huì)被執(zhí)行的代碼

try:
    num('a', 'b')
except:
    print('你的程序出現(xiàn)了大問(wèn)題！??！')
print('--------->end')

try:
    num('a', 'b')
except ValueError:
    print('你的參數(shù)格式寫(xiě)的不對(duì)！??！')
except ZeroDivisionError:
    print('你的除數(shù)是0?。。?)
print('--------->end')

try:
    num(10, 0)
except ValueError:
    print('你的參數(shù)格式寫(xiě)的不對(duì)?。。?)
except ZeroDivisionError:
    print('你的除數(shù)是0?。。?)
print('--------->end')

try:
    num(10, 0)
except ValueError as error_msg_value:
    print('你的參數(shù)格式寫(xiě)的不對(duì)?。?！', error_msg_value)
except ZeroDivisionError as error_msg_zero:
    print('你的除數(shù)是0！?。?, error_msg_zero)
print('--------->end')

try:
    num('a', 'b')
except ZeroDivisionError as error_msg_zero:
     print('你的除數(shù)是0?。。?, error_msg_zero)
finally:
    print('無(wú)論有沒(méi)有異常，finally都會(huì)執(zhí)行')
print('--------->end')
 

try:
    num('a', 'b')
# except ValueError as error_msg_value:
#     print('你的參數(shù)格式寫(xiě)的不對(duì)?。?！', error_msg_value)
except ZeroDivisionError as error_msg_zero:
     print('你的除數(shù)是0?。?！', error_msg_zero)
finally:
    print('無(wú)論有沒(méi)有異常，finally都會(huì)執(zhí)行')
print('--------->end')

try:
    num(10, 2)
except ValueError as error_msg_value:
    print('你的參數(shù)格式寫(xiě)的不對(duì)?。?！', error_msg_value)
except ZeroDivisionError as error_msg_zero:
     print('你的除數(shù)是0?。?！', error_msg_zero)
else:
    print('else')
finally:
    print('無(wú)論有沒(méi)有異常，finally都會(huì)執(zhí)行')
print('--------->end')

raise errorName('error message')

def num(a, b):
    result = a / b
    print(result)
    if result < 10:
        raise ValueError('商小于10，不符合預(yù)期。')
 
num(10, 2)

def ch_type():
    try:
        result = 10 / 0
    except ZeroDivisionError as err_msg:
        raise Exception(err_msg)
 
ch_type()