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How to apply a function to two columns of Pandas dataframe
Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function :
12 Answers
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Multiprocessing - Pipe vs Queue
... as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (it doesn't even know about the specific task, it just counts unfinished tasks in the queue), so that queue.join() knows the work is finished.
The code for each at bottom of this answer...
mpenning@mpenning-T61:~$ pyt...
Easy pretty printing of floats in python?
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It's an old question but I'd add something potentially useful:
I know you wrote your example in raw Python lists, but if you decide to use numpy arrays instead (which would be perfectly legit in your example, because you seem to be dealing with arrays of numbers), there is ...
Can someone explain the traverse function in Haskell?
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traverse is the same as fmap, except that it also allows you to run effects while you're rebuilding the data structure.
Take a look at the example from the Data.Traversable documentation.
data Tree a = Empty | Leaf a | Node (Tree a) a (Tree a)
The Functor instance of Tr...
Archiving project in Xcode incorrectly creates multi-application bundle
...ead of bundling my main target for release, which is what I want. Specifically, when I validate my archive in Organizer, it gives me the message:
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Converting from longitude\latitude to Cartesian coordinates
...'re talking about a distance of a few feet and even then there is theoretically curvature of the Earth... If you require more rigidly WGS-84 compatible approach checkout the "Vincenty Formula."
I understand where starblue is coming from, but good software engineering is often about trade offs, so ...
Convert list to dictionary using linq and not worrying about duplicates
...t 2.0 framework at work... @onof Not exactly hard to ignore case. Just add all keys in uppercase.
– Carra
Jul 23 '10 at 14:42
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F# development and unit testing?
... process of writing code. I have been using TDD for years in C# now, and really appreciate to have unit tests to know where I am at.
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Fragment in ViewPager using FragmentPagerAdapter is blank the second time it is viewed
...r me too. Here is a link. It seems to save the fragment state, which makes all the difference. developer.android.com/reference/android/support/v4/app/…
– Tjaart
Jan 28 '14 at 12:04
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Turning multi-line string into single comma-separated
... awk: invalid -v option :(
– Marsellus Wallace
Jun 15 '15 at 17:38
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Add a space bet...