Python 如何在不重复的情况下获取行
我正在编写python脚本,以便从sqlite3数据库中提取数据 我在数据库中有频道列表,但我在打印频道时遇到问题,因为我在sqlite3数据库中存储了30个频道,我希望一次打印一个频道而不重复 使用此代码:Python 如何在不重复的情况下获取行,python,python-2.7,xbmc,Python,Python 2.7,Xbmc,我正在编写python脚本,以便从sqlite3数据库中提取数据 我在数据库中有频道列表,但我在打印频道时遇到问题,因为我在sqlite3数据库中存储了30个频道,我希望一次打印一个频道而不重复 使用此代码: #Pull the data from the database channelList = list() programList = list() database_path = xbmc.translatePath(os.path.join('special://userdata/a
#Pull the data from the database
channelList = list()
programList = list()
database_path =
xbmc.translatePath(os.path.join('special://userdata/addon_data/script.tvguide',
'source.db'))
if os.path.exists(database_path):
#get the channels list
cur.execute('SELECT channel FROM programs WHERE channel')
row = cur.fetchone()
for row in cur:
channel = row[0].encode('ascii')
#channelList.append(channel)
print channel
if os.path.exists(database_path):
#get the channels list
cur.execute('SELECT channel FROM programs WHERE channel GROUP BY channel')
row = cur.fetchone()
for row in cur:
channel = row[0].encode('ascii')
#channelList.append(channel)
print channel
结果:
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:47:21 T:2196 NOTICE: 102 CBS
16:47:21 T:2196 NOTICE: 103 CNN USA
16:47:21 T:2196 NOTICE: 105 ESPN USA
16:47:21 T:2196 NOTICE: 106 Fox News
16:47:21 T:2196 NOTICE: 107 Animal Planet
16:47:21 T:2196 NOTICE: 108 USA Network
16:47:21 T:2196 NOTICE: 110 SPIKE
16:47:21 T:2196 NOTICE: 111 BRAVO USA
16:47:21 T:2196 NOTICE: 112 BRAVO1
16:47:21 T:2196 NOTICE: 113 BRAVO2
16:47:21 T:2196 NOTICE: 114 BRAVO3
16:47:21 T:2196 NOTICE: 115 BRAVO4
16:47:21 T:2196 NOTICE: 116 BRAVO5
16:47:21 T:2196 NOTICE: 117 BRAVO6
16:47:21 T:2196 NOTICE: 118 BRAVO7
我想得出这样的结果:
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 103 CNN USA
编辑:缺少一个频道:
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 101 ABC FAMILY
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 102 CBS
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:23:14 T:3280 NOTICE: 103 CNN USA
16:47:21 T:2196 NOTICE: 102 CBS
16:47:21 T:2196 NOTICE: 103 CNN USA
16:47:21 T:2196 NOTICE: 105 ESPN USA
16:47:21 T:2196 NOTICE: 106 Fox News
16:47:21 T:2196 NOTICE: 107 Animal Planet
16:47:21 T:2196 NOTICE: 108 USA Network
16:47:21 T:2196 NOTICE: 110 SPIKE
16:47:21 T:2196 NOTICE: 111 BRAVO USA
16:47:21 T:2196 NOTICE: 112 BRAVO1
16:47:21 T:2196 NOTICE: 113 BRAVO2
16:47:21 T:2196 NOTICE: 114 BRAVO3
16:47:21 T:2196 NOTICE: 115 BRAVO4
16:47:21 T:2196 NOTICE: 116 BRAVO5
16:47:21 T:2196 NOTICE: 117 BRAVO6
16:47:21 T:2196 NOTICE: 118 BRAVO7
当我使用此代码时:
#Pull the data from the database
channelList = list()
programList = list()
database_path =
xbmc.translatePath(os.path.join('special://userdata/addon_data/script.tvguide',
'source.db'))
if os.path.exists(database_path):
#get the channels list
cur.execute('SELECT channel FROM programs WHERE channel')
row = cur.fetchone()
for row in cur:
channel = row[0].encode('ascii')
#channelList.append(channel)
print channel
if os.path.exists(database_path):
#get the channels list
cur.execute('SELECT channel FROM programs WHERE channel GROUP BY channel')
row = cur.fetchone()
for row in cur:
channel = row[0].encode('ascii')
#channelList.append(channel)
print channel
可以通过以下两种方式之一更改SQL查询来实现此目的:
SELECT DISTINCT channel FROM programs WHERE channel
或:
我个人更喜欢前者,因为
groupby
包含许多其他对组织数据有用的功能。我不会仅仅依靠它来删除重复项,但选项是存在的。可能会在SQL语句中抛出一个DISTINCT。像从节目中选择不同的频道,其中频道
非常感谢,我可以看到我可以一次打印一个频道而不重复,但有一个频道缺失,称为abc系列
。你知道它为什么不见了吗?请查看我的更新帖子。@user3853587我看到您使用的是分组依据
,如果使用不同的
,会发生什么?我得到相同的结果。但是,我已经删除了代码row=cur.fetchone()
,现在它正在工作。我可以打印完整的频道列表,非常感谢您的帮助。非常感谢!