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Remap values in pandas column with a dict
I have a dictionary which looks like this: di = {1: "A", 2: "B"}
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How to install both Python 2.x and Python 3.x in Windows
...ging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x.
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JavaScript function similar to Python range()
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Rounding up to next power of 2
I want to write a function that returns the nearest next power of 2 number. For example if my input is 789, the output should be 1024. Is there any way of achieving this without using any loops but just using some bitwise operators?
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How does one reorder columns in a data frame?
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Your dataframe has four columns like so df[,c(1,2,3,4)].
Note the first comma means keep all the rows, and the 1,2,3,4 refers to the columns.
To change the order as in the above question do df2[,c(1,3,2,4)]
If you want to output this file as a csv, do write.csv(df2, file...
Could not locate Gemfile
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answered Jul 25 '10 at 16:40
JoniJoni
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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...o similar questions scattered around this site.
tmp <- data.frame(x=gl(2,3, labels=letters[24:25]),
y=gl(3,1,6, labels=letters[1:3]),
z=c(1,2,3,3,3,2))
Using the tidyverse:
The new cool new way to do this is with pivot_wider from tidyr 1.0.0. It returns a...
How do I find the duplicates in a list and create another list with them?
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