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Django 1.7 throws django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet
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pandas: filter rows of DataFrame with operator chaining
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Efficient SQL test query or validation query that will work across all (or most) databases
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How does the C code that prints from 1 to 1000 without loops or conditional statements work?
I've found C code that prints from 1 to 1000 without loops or conditionals :
But I don't understand how it works. Can anyone go through the code and explain each line?
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how to ignore namespaces with XPath
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You can use the local-name() XPath function. Instead of selecting a node like
/path/to/x:some...
How to drop columns by name in a data frame
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vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...不扣的“准”标准库。
Boost库中比较有名的几个库：
（1）Regex，正则表达式库；
（2）Spirit，LL parser framework，用C++代码直接表达EBNF；
（3）Graph，图组件和算法；
（4）Lambda，在调用的地方定义短小匿名的函数对象，很实用...
Loop backwards using indices in Python?
I am trying to loop from 100 to 0. How do I do this in Python?
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Printing everything except the first field with awk
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List of lists into numpy array
...nacio Vazquez-Abrams will not work. Instead there are at least 3 options:
1) Make an array of arrays:
x=[[1,2],[1,2,3],[1]]
y=numpy.array([numpy.array(xi) for xi in x])
type(y)
>>><type 'numpy.ndarray'>
type(y[0])
>>><type 'numpy.ndarray'>
2) Make an array of lists:...