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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
...olumn, select just that column. in this case I'm using inplace=True to actually change the contents of df.
In [12]: df[1].fillna(0, inplace=True)
Out[12]:
0 0.000000
1 0.570994
2 0.000000
3 -0.229738
4 0.000000
Name: 1
In [13]: df
Out[13]:
0 1
0 NaN 0.0000...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
... with x[numpy.ix_([0,2],[1,3])]. This can save you from having to enter in all of those extra brackets.
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The object cannot be deleted because it was not found in the ObjectStateManager
...bove worked for me since i was deleting registers from more than one class/service and each of of them was instantiating it's own database connection context.
What i did to solve it was to send the first created context to the rest of the classes/services that where going to access the database.
F...
Cleaner way to do a null check in C#? [duplicate]
...
Is this really considered cleaner?
– ClassicThunder
Jul 16 '13 at 13:35
23
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What's the best Django search app? [closed]
...nsider letting Yahoo do all the hard work with their Build your own Search Service (BOSS). Here is a great blog post that walks you through the process:
http://www.peterkrantz.com/2008/yahoo-search-in-django/
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Python Empty Generator Function
... list(f())
[None]
Why not just use iter(())?
This question asks specifically about an empty generator function. For that reason, I take it to be a question about the internal consistency of Python's syntax, rather than a question about the best way to create an empty iterator in general.
If ques...
How to git log from all branches for the author at once?
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Formatting code snippets for blogging on Blogger [closed]
... I spent a couple hours on it and I can't get this to work at all.
– thepaulpage
Mar 21 '13 at 15:43
2
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Count number of occurrences of a given substring in a string
..."It works because I checked it", you could include an example on an online service like repl.it with some sample data.
– Valentin
Jul 15 '17 at 15:48
1
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Is there a max array length limit in C++?
...se memory is full. For example, a vector<int> of a given size n typically takes multiple times as much memory as an array of type vector<char> (minus a small constant value), since int is usually bigger than char. Therefore, a vector<char> may contain more items than a vector<in...