我在烧瓶views.py中有这个
def showpage():
...
test = [1,2,3,4,5,6]
return render_template("sample.html",test=test)
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我的样本.html中有这个
<script> var counts = {{test}}; </script>
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这给了我一个空的计数变量.如何获得与python中的测试列表相同的计数?
我是Unity3D和c#的新手.我正在修补在2d阵列中存储一些网格位置但是我遇到了
the array index is out of range
错误,我不知道为什么:
public int[,] myArray;
myArray = new int[,]{
{0,375},
{75,300},
{150,225},
{225,150},
{300,75},
{375,0}
};
Debug.Log(myArray[1,4]); // array index is out of range... why? I expected to get 75.
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以下是我正在寻求帮助的其他一些资源:http: //wiki.unity3d.com/index.php/Choosing_the_right_collection_type
我有一个python脚本在远程linux的控制台中提供命令行/输出.我有另一个脚本,它在本地机器上读取此输出.输出格式如下:
ABC: NEG
BCD: NEG
FGH: POS
{aa:bb:cc:dd:ee{"value":"30","type":"Tip 3","targetModule":"Target 3","configurationGroup":null,"name":"Configuration Deneme 3","description":null,"identity":"Configuration Deneme 3","version":0,"systemId":3,"active":true}}
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注意最后一行是json格式,现在我想检查哪一行是json格式的输出.我试过了
if "value" in line:
json.loads(line)
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它不是阅读甚至是
json.dumps(线)
没有输出?
我试图用以下定义定义二叉树:
trait Node {
val label: Int
}
case class BranchNode(override val label: Int, left: Option[Node], right: Option[Node]) extends Node
case class LeafNode(override val label: Int) extends Node
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然后printTree使用Scala的模式匹配定义一个简单的方法,如下所示:
def printTree(aTree: Option[Node]): Unit = aTree match {
case None => print(".")
case Some(LeafNode(label)) => print(label)
case Some(BranchNode(label, left, right)) => "{" + printTree(left) + label + printTree(right) + "}"
}
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Intellij IDE警告我,这场比赛可能并非详尽无遗.一个Option可以拥有None或Some作为它的价值观.如果是Option[Node],它可以是Some(LeafNode)或Some(BranchNode).还有什么其他情况我可以忽略?
为了在Python中创建N个元素的void向量,我们使用:
a = [None] * N
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如何创建M次N的矩阵,而不是用1或0填充?谢谢!
我有一个简单的函数来解析.csv,如下所示
def grabber3(datafile):
with open(datafile, 'rb') as f:
r =csv.DictReader(f)
for line in r:
del line['thisthing']
print line
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这样可以正确地打印每条dict线,大约50行,如
{'NetworkStatus': '1', 'ID': '1469'}
{'NetworkStatus': '1', 'ID': '1470'}
etc etc
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但是我想在调用函数时返回这个,所以我将print语句更改为return as
def grabber3(datafile):
with open(datafile, 'rb') as f:
r =csv.DictReader(f)
for line in r:
del line['thisthing']
return line
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但它只返回第一行
{'NetworkStatus': '1', 'ID': '1469'}
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如何返回循环/所有dict行的每一行而不是第一行?