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How to get the first column of a pandas DataFrame as a Series?

...c wasn't there yet back then. In 2016, the correct answer is Jeff's (after all he's pandas God, mind you ;-)). I'm not sure what's SO's policy regarding update of answers due to API change; I'm honestly surprised by the number of votes for this answer, didn't think it was that useful to people... ...
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Pandas read_csv low_memory and dtype options

When calling 9 Answers 9 ...
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How to Remove ReadOnly Attribute on File Using PowerShell?

...e here? As for Keith's answer, he's using PSCX. Not everyone has those installed and that's not really a case of PowerShell v1 vs. v2. – Joey Apr 22 '11 at 9:28 add a comment ...
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MSBuild doesn't copy references (DLL files) if using project dependencies in solution

...erence pollution in project Y. The problem is, since project X doesn't actually contain any code that explicitly uses assembly B (e.g. B.SomeFunction()), VS/MSBuild doesn't detect that B is required by X, and thus doesn't copy it over into project Y's bin directory; it only copies the X and A assemb...
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How can I make git do the “did you mean” suggestion?

... As an alternative to help.autocorrect: if you make the same typos all the time, you can create aliases for them in your .gitconfig file [alias] puhs = push (I do this with shell aliases too, where I can never seem to type mkae^H^H^H^Hmake correctly.) ...
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Why is Java's SimpleDateFormat not thread-safe? [duplicate]

...ed by operations on DateFormat / SimpleDateFormat. For example parse(..) calls calendar.clear() initially and then calendar.add(..). If another thread invokes parse(..) before the completion of the first invocation, it will clear the calendar, but the other invocation will expect it to be populated...
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How do I call ::std::make_shared on a class with only protected or private constructors?

... Actually, I am a huge fan of those meaningless structures used only as keys. I prefer this to Luc's solution, but that might be my biais against inheritance. – Matthieu M. Nov 16 '11 at 7:43...
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Execute Python script via crontab

...p/crontab.JTQ0My/crontab":22: bad minute errors in crontab file, can't install. Do you want to retry the same edit? (y/n)" if I type "y", I've returned to file edit. And if I type "n" the file is not saved. I add this line at last line of the file: "/1 * * * * /usr/bin/python script.py" ...
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How safe is it to store sessions with Redis?

... Redis is perfect for storing sessions. All operations are performed in memory, and so reads and writes will be fast. The second aspect is persistence of session state. Redis gives you a lot of flexibility in how you want to persist session state to your hard-dis...
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what's the correct way to send a file from REST web service to client?

...n begin. My REST service is made on Java and I'm using Jersey, I'm sending all the data using the JSON format. 4 Answers ...