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题解 | #前10个偶数#

a = list(range(0,20,2)) for j in a: print(j)

2023-03-12

0 167

题解 | #列表的最大与最小#

a = [i for i in range(10,51)] print(a) print(a[0],a[-1],sep=' ')

2023-03-12

0 227

题解 | #字符列表的长度#

a = list('Python') print('Here is the original list:\n{}\n\nThe number that my_list has is:\n{}'.format(a,len(a)))

2023-03-12

0 175

题解 | #统计活跃间隔对用户分级结果#

#思路：用每个用户最早、最晚两个活跃时间与划分标准进行判断并分类即可。 with tb1 as( select uid, date(in_time) dt from tb_user_log union all select uid, date(out_time) dt fr...

2023-03-12

0 190

题解 | #2021年11月每天新用户的次日留存率#

with tb1 as( select uid, date(in_time) dt from tb_user_log union all select uid, date(out_time) dt from tb_user_log) select tb3.dt, round...

2023-03-11

0 214

题解 | #菜品的价格#

#输入牛妹点的任意食物，输出这顿饭钱。如点了pizza，rice，cola，输出20元。 a = input().split() b = {'pizza':10,'rice':2,'yogurt':5,'else':8} c = [] d = ['pizza','rice','yogurt'] fo...

2023-03-11

0 251

题解 | #禁止重复注册#

a = ['Niuniu','Niumei','GURR','LOLO'] b = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi'] c = [i.lower() for i in a] d = [j.lower() for j in b] for ii in d:...

2023-03-11

0 163

题解 | #判断列表是否为空#

#if判断的对象可以是非空/空的数组，若非空则判断为True，空则判断为False a = [] if a: #也可写为 #if a is True: print('my_list is not empty!') else: print('my_list is empty!')

2023-03-11

0 155

题解 | #判断布尔值#

a = bool(int(input())) if a is False: print('Erros!') else: print('Hello World!')

2023-03-11

0 223

题解 | #近一个月发布的视频中热度最高的top3视频#

with tb1 as( select *, max(end_time)over() a, datediff(max(end_time)over(),max(end_time)over(partition by video_id)) b, timestampdiff(sec...

2023-03-10

1 253