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Catching java.lang.OutOfMemoryError?
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answered Apr 21 '10 at 6:33
ChrisChris
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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...]: df.drop_duplicates(subset='A', keep="last")
Out[10]:
A B
1 1 20
3 2 40
4 3 10
You can do also something like:
In [12]: df.groupby('A', group_keys=False).apply(lambda x: x.loc[x.B.idxmax()])
Out[12]:
A B
A
1 1 20
2 2 40
3 3 10
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Why aren't programs written in Assembly more often? [closed]
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32 Answers
32
Active
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Why use non-member begin and end functions in C++11?
Every standard container has a begin and end method for returning iterators for that container. However, C++11 has apparently introduced free functions called std::begin and std::end which call the begin and end member functions. So, instead of writing
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Check if a value exists in pandas dataframe index
...ume JacquenotGuillaume Jacquenot
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7
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What does a just-in-time (JIT) compiler do?
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534
A JIT compiler runs after the program has started and compiles the code (usually bytecode or so...
What is the difference between “text” and new String(“text”)?
...his is very peculiar, and is rarely the intention.
References
JLS 15.21.3 Reference Equality Operators == and !=
class Object - boolean Object(equals)
Related issues
Java String.equals versus ==
How do I compare strings in Java?
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How to install and run phpize
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Felix
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answered Jan 24 '12 at 4:57
BlackoutBlackout
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'nuget' is not recognized but other nuget commands working
...r nuget.exe (for me this is: C:\Program Files (x86)\NuGet\Visual Studio 2013)
Restart Visual Studio
I would have posted this as a comment to your answer @done_merson but I didn't have the required reputation to do that.
sh...
pandas DataFrame: replace nan values with average of columns
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283
You can simply use DataFrame.fillna to fill the nan's directly:
In [27]: df
Out[27]:
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