我是个新手,我想写一个电影院票务系统的程序。这只是我试图找出如何使用while,所以如果输入错误,我可以停止程序的下一步,这是while代码:(我得到了一些地方,我改变了一些东西)
Movie_is = "a"# i want to assign more than one string like "A","b","B" etc
movie_slection = True
while movie_slection:
Choose=raw_input("Choose your movie by typing the cor
我试着在其他表上按po号来得到交付量的总和
SELECT
po.PONumber,
po.PODate,
po.customername,
po.Description,
SUM(spb.DeliveryQty)
FROM
tb_po AS po
LEFT OUTER JOIN
tb_spb AS spb ON po.PONumber = spb.PONumber
GROUP BY
po.PONumber,
po.Description
mysql显示的数据如下
PONUMBER podate customername descripti
当我尝试将下面的字符串解析成json时,我遇到了困难。有没有人能告诉我或者建议我如何正确地解析以下json字符串?
'[{"club_id":"19","club_name":"Al Lawrence","club_desc":"We welcome anyone who enjoys the camaraderie of competition at any level. Al currently coaches many Houston area runners ranging from e
最好的转换方法是什么?
[[["Club three Team one", 7800], ["Club three Team two", 7801]], [], [["Club four Team one", 7807], ["Club four Team two", 7808]], []]
转到
[["Club three Team one", 7800], ["Club three Team two", 7801], ["Club four Team one", 7807], [
with table1 as (
select club_results.goals_scored as goals_scored, club_results.goals_conceded as goals_conceded
from club_results
inner join club on club_results.club_id=club.club_id
),
table2 as(
select (club_results.goals_scored - club_results.goals_conceded) as goal_difference
我想生成一个带有俱乐部列表的足球比赛安排。每个游戏都在match_starts_at数组中包含的随机时间内的星期天进行。每周日每个俱乐部只进行一场比赛。
示例:
拥有这些俱乐部:
Club Atlético All Boys
Asociación Atlética Argentinos Juniors
Arsenal Fútbol Club
Club Atlético Banfield
Club Atlético Belgrano
Club Atlético Boca Juniors
Club Atlético Colón
Club Estudiantes de La Plata
Club D
可能是一些简单的事情,但我的一个测试失败了,这让我很困扰。
我有一个视图,它处理来自表单的POST请求以编辑模型。我不明白为什么这个测试会失败(名称不变):
def test_edit_club_view(self):
"""
Test changes can be made to an existing club through a post request to the edit_club view.
"""
new_club = Club.objects.create(
name =
我在我的pandas df中有一个' club‘栏目,其中包含英超俱乐部的名称,但俱乐部的名称并不适合我想要实现的目标。我尝试用条件语句编写一个函数,用我想要的格式填充另一列俱乐部的名称。我尝试将我的函数应用于我的df,但是我得到了这个错误:
ValueError: ('The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().', 'occurred at index 0')
这是名为test的df的样子:
这是我的
我正在构建一个足球游戏,我在创建Club和Match类时遇到了问题。我希望能够做到这一点:
match = Match.find(2)
match.home_club = <some club here>
match.away_club = <other club here>
还有这个:
club = Club.find(2)
club.matches # Returns all matches where club plays home or away
这就是我现在所拥有的:
class Club < ActiveRecord::Base
has_many