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correct way to define class variables in Python [duplicate]
...em
999 456
As you can see, when we changed the class element, it changed for both objects. But, when we changed the object element, the other object remained unchanged.
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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
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I believe DataFrame.fillna() will do this for you.
Link to Docs for a dataframe and for a Series.
Example:
In [7]: df
Out[7]:
0 1
0 NaN NaN
1 -0.494375 0.570994
2 NaN NaN
3 1.876360 -0.229738
4 NaN NaN
In...
Django 1.7 throws django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet
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This is what solved it for us and these folks:
Our project started with Django 1.4, we went to 1.5 and then to 1.7. Our wsgi.py looked like this:
import os
from django.core.handlers.wsgi import WSGIHandler
os.environ['DJANGO_SETTINGS_MODULE'] =...
Are PHP include paths relative to the file or the calling code?
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@Pekka- awesome- just what I was looking for. For further info, see stackoverflow.com/questions/2184810/…
– Yarin
Sep 11 '11 at 14:35
7
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Exiting from python Command Line
...out the string representation of the object. This is the default behaviour for any object returned. It's just that the designers thought people might try to type exit to exit the interpreter, so they made the string representation of the exit function a helpful message. You can check this behaviour ...
Concurrent HashSet in .NET Framework?
... The .NET Framework does not provide a built-in concurrent hashset type, unfortunately. However, there are some workarounds.
ConcurrentDictionary (recommended)
This first one is to use the class ConcurrentDictionary<TKey, TValue> in the namespace System.Collections.Concurrent. In the case, ...
Among $_REQUEST, $_GET and $_POST which one is the fastest?
...application.
Either way, there will not be much of a difference about performances : the difference will be negligible, compared to what the rest of your script will do.
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What does Python's eval() do?
... the user type in a command string and then have python run it as code. So for example: eval("__import__('os').remove('file')").
– BYS2
Feb 21 '12 at 19:24
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Creating a ZIP Archive in Memory Using System.IO.Compression
...am.CopyTo(fileStream);
}
}
So we need to call dispose on ZipArchive before we can use it, which means passing 'true' as the third parameter to the ZipArchive so we can still access the stream after disposing it.
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Check if an array contains any element of another array in JavaScript
... array to search.
* @param {array} arr the array providing items to check for in the haystack.
* @return {boolean} true|false if haystack contains at least one item from arr.
*/
var findOne = function (haystack, arr) {
return arr.some(function (v) {
return haystack.indexOf(v) >= 0;...