我可以在本地运行redis,一切正常.
但是,当我部署到heroku时,我收到此错误:
Error 111 connecting to localhost:6379. Connection refused.
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我用...设置了一个Procfile
web: gunicorn odb.wsgi --log-file -
worker: python worker.py
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我有一个worker.py文件......
import os
import urlparse
from redis import Redis
from rq import Worker, Queue, Connection
listen = ['high', 'default', 'low']
redis_url = os.getenv('REDISTOGO_URL')
if not redis_url:
raise RuntimeError('Set up Redis To Go first.')
urlparse.uses_netloc.append('redis')
url = urlparse.urlparse(redis_url)
conn = Redis(host=url.hostname, port=url.port, db=0, password=url.password)
if __name__ == '__main__':
with Connection(conn):
worker = Worker(map(Queue, listen))
worker.work()
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一个REDISTOGO_URL变量出现在heroku配置中.
Redis to go是我的应用程序的已安装插件.
REDISTOGO_URL是否必须在settings.py中定义?为什么heroku在worker.py中甚至没有定义时尝试连接到本地主机?
是否有在R中创建重复字母列表的功能?
就像是
letters[1:30]
[1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s"
[20] "t" "u" "v" "w" "x" "y" "z" NA NA NA NA
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但不是NA,我希望输出继续aa,bb,cc,dd ......
我有两个向量:
Start = c(1,10,20)
Finish = c(9,19,30)
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我希望这样的东西能起作用......
开始:完成
但当然不是.
我想生成如下列表:
[1] 1,2,3,4,5,6,7,8,9
[2] 10 11 12 13 14 15 16 17 18 19
[3] 20 21 22 23 24 25 26 27 28 29 30
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优选地以某种矢量化方式.Start矢量将始终大于相应元素的Finish矢量.
如何更换空字符串?
这个:
x = c("","b")
gsub("","taco",x)
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生产:
"taco" "tacobtaco"
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代替:
"taco" "b"
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有没有办法替换空字符串?
在python中,可以使用以下命令获取Windows计算机上桌面的路径:
os.sep.join((os.path.expanduser("~"), "Desktop"))
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R中有相同的东西吗?
当Entry对象的数量大于5000个条目时,django中有没有办法更有效地执行以下操作?
models.py
class Entry(models.Model):
user = models.TextField(db_column='User', blank=True)
date = models.DateTimeField(blank=True)
class Color(models.Model):
color = models.TextField(blank=True)
entry = models.ForeignKey(Entry)
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让我们说我希望获得每个条目的所有颜色......
entrys = Entry.objects.all()
for e in entrys:
print e.color_set.all()
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我希望能够将每个对象与特定条目相关联.例如,在像这样的csv表中.
user, color
john, blue
john, orange
bob, green
bob, red
bob, purple
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查看我的所有条目需要几秒钟的时间.有没有更好的办法?
假设我想合并两个data.frames,但有些列是冗余的(相同).我如何合并这些data.frames但删除冗余列?
X1 = data.frame(id = c("a","b","c"), same = c(1,2,3), different1 = c(4,5,6))
X2 = data.frame(id = c("b","c","a"), same = c(2,3,1), different2 = c(7,8,9))
merge(X1,X2, by="id", all = TRUE, sort = FALSE)
id same.x different1 same.y different2
1 a 1 4 1 9
2 b 2 5 2 7
3 c 3 6 3 8
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但是,我如何得到不同的1和不同的2列?
id same different1 different2
1 a 1 4 9
2 b 2 5 7
3 c 3 6 8
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