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Split (explode) pandas dataframe string entry to separate rows

I have a pandas dataframe in which one column of text strings contains comma-separated values. I want to split each CSV field and create a new row per entry (assume that CSV are clean and need only be split on ','). For example, a should become b : ...
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Rails select helper - Default selected value, how?

Here is a piece of code I'm using now: 15 Answers 15 ...
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Implications of foldr vs. foldl (or foldl')

Firstly, Real World Haskell , which I am reading, says to never use foldl and instead use foldl' . So I trust it. 7 A...
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Simple tool to 'accept theirs' or 'accept mine' on a whole file using git

...don't want a visual merge tool, and I also don't want to have to vi the conflicted file and manually choose the between HEAD (mine) and the imported change (theirs). Most of the time I either want all of their changes or all of mine. Commonly this is because my change made it upsteam and is coming...
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Convert data.frame columns from factors to characters

I have a data frame. Let's call him bob : 18 Answers 18 ...
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How to print like printf in Python3?

...keyword which introduced a statement: print "Hi" In Python3, print is a function which may be invoked: print ("Hi") In both versions, % is an operator which requires a string on the left-hand side and a value or a tuple of values or a mapping object (like dict) on the right-hand side. So, you...
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Find all files in a directory with extension .txt in Python

How can I find all the files in a directory having the extension .txt in python? 26 Answers ...
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Iterate over model instance field names and values in template

I'm trying to create a basic template to display the selected instance's field values, along with their names. Think of it as just a standard output of the values of that instance in table format, with the field name (verbose_name specifically if specified on the field) in the first column and the ...
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Method Resolution Order (MRO) in new-style classes?

...ate how methods are resolved in classic resolution order and how is it different with the new order. 4 Answers ...
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In git, is there a way to show untracked stashed files without applying the stash?

If I run git stash -u , I can stash untracked files. However, said untracked files don't show up at all with git stash show stash@{0} . Is there any way to show untracked stashed files without applying the stash? ...