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How to keep index when using pandas merge
...1 1 1
b 2 3 2
c 3 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when there are multiple matches between a and b. In this case, you may need to drop duplicates.
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What's the difference between a Python “property” and “attribute”?
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Ethan FurmanEthan Furman
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pandas GroupBy columns with NaN (missing) values
...ng the groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 1 4
1 2 -1
2 3 6
In [12]: df.fillna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github i...
biggest integer that can be stored in a double
What is the biggest "no-floating" integer that can be stored in an IEEE 754 double type without losing precision ?
7 Answer...
Why NSUserDefaults failed to save NSMutableDictionary in iOS?
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answered Jan 23 '09 at 4:56
BlueDolphinBlueDolphin
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Disable assertions in Python
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edited Sep 4 '19 at 20:41
answered Apr 27 '17 at 21:50
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Hidden Features of Xcode 4
Now that Xcode 4 is officially released it's time for a follow up to my previous question: Hidden Features of Xcode
23 Ans...
NUnit isn't running Visual Studio 2010 code
...anged the target framework setting for all the projects to ".NET Framework 4.0". I then built the solution without any errors. I can now use the NUnit GUI app to run tests built for .NET 4.0. I've not done exhaustive testing of this build so there may be problems, but for my purposes it works fine.
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Scalar vs. primitive data type - are they the same thing?
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edited Jul 22 '15 at 13:48
kareman
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answered Jul 8 '...
How to fix: Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its
... following command at the command prompt
%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -i
If I had been on a 32 bit system, it would have looked like the following:
%windir%\Microsoft.NET\Framework\v4.0.21006\aspnet_regiis.exe -i
Remeber to run the command prompt as administr...