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How to remove all rows in a numpy.ndarray that contain non-numeric values

Basically, I'm doing some data analysis. I read in a dataset as a numpy.ndarray and some of the values are missing (either by just not being there, being NaN , or by being a string written " NA "). ...
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How to sum all column values in multi-dimensional array?

How can I add all the columnar values by associative key? Note that key sets are dynamic. 20 Answers ...
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How to use Python's pip to download and keep the zipped files for a package?

...the pip command to download a package (and its dependencies), but keep all of the zipped files that get downloaded (say, django-socialregistration.tar.gz) - is there a way to do that? ...
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How to enable mod_rewrite for Apache 2.2

I've got fresh install of Apache 2.2 on my Vista machine, everything works fine, except mod rewrite. 15 Answers ...
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What does “Changes not staged for commit” mean

...epository, you have to git add it again if you want it to be staged. This allows you to commit only a subset of the changes you made since the last commit. For example, let's say you have file a, file b and file c. You modify file a and file b but the changes are very different in nature and you do...
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How to clear variables in ipython?

...nd I get bad surprises when variables haven't been cleared. How do I clear all variables? And is it possible to force this somehow every time I invoke the magic command %run? ...
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View all TODO items in Visual Studio using GhostDoc

I'm also using GhostDoc in Visual Studio 2008. How do I view all to-do items and if that's a function already in Visual Studio or in GhostDoc (the documentation tool that I use)? ...
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When restoring a backup, how do I disconnect all active connections?

...ecificed DELAY, thereby giving user queries an opporunity to complete naturally. – John Sansom Jul 20 '09 at 16:02 2 ...
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How to clone all repos at once from GitHub?

I have a company GitHub account and I want to back up all of the repositories within, accounting for anything new that might get created for purposes of automation. I was hoping something like this: ...
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How to add a local repo and treat it as a remote repo

... Is the .git at the end specifically required though? – Erik Aigner Sep 23 '16 at 10:47 5 ...