select
t1.city_name
from
(
select
'全国' as city_name
from
stg.t_vip
union all
select
cc.city_name
from
stg.t_city_config cc
join
stg.t_vip v
on
v.city_id =
我是个Python初学者,一件事都做不到。看,我们的老师告诉我们做一个函数来计算所有考试分数的平均分数,用不确定的考试次数来计算。它必须在Python2.7中。
def main():
print("This program computes the average of multiple exam scores.")
scoresno = input("Enter number of exam scores: ")
for scores in range(scoresno):
scores = input("Enter exam sc