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Find row where values for column is maximal in a pandas DataFrame
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252
Use the pandas idxmax function. It's straightforward:
>>> import pandas
>>>...
How can I run PowerShell with the .NET 4 runtime?
... .NET assemblies. The script was written for assemblies built against .NET 2 (the same version of the framework that PowerShell runs with), but now needs to work with .NET 4 assemblies as well as .NET 2 assemblies.
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Add new row to dataframe, at specific row-index, not appended?
...ds the (often slow) rbind call:
existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),]
existingDF[r,] <- newrow
existin...
Unpacking, extended unpacking and nested extended unpacking
...et's see how it works for a slightly more complex example:
(a,b), c, = [1,2],'this' # a = '1', b = '2', c = 'this'
Applying the above rules, we get
((a, b), c) = ((1, 2), ('t', 'h', 'i', 's'))
But now it's clear from the structure that 'this' won't be unpacked, but assigned directl...
How do I modify fields inside the new PostgreSQL JSON datatype?
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21 Answers
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Setting Vim whitespace preferences by filetype
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245
there are many ways, but here's a simple, easy to understand way. add these lines to your ~/.v...
Maven: missing net.sf.json-lib
...-lib in the central repository . Copy-pasted the dependency (with version 2.3), and then when I build I get this error:
4 ...
Common xlabel/ylabel for matplotlib subplots
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218
This looks like what you actually want. It applies the same approach of this answer to your sp...
The most efficient way to implement an integer based power function pow(int, int)
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edited Apr 4 '18 at 7:26
John Zwinck
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