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What is the most efficient way to loop through dataframes with pandas? [duplicate]

...Note that iterrows is very slow (it converts every row to a series, potentially messing with your data types). When you need an iterator, better to use itertuples – joris Jul 29 '15 at 15:46 ...
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Should import statements always be at the top of a module?

...t that's only paid once. Putting the imports within a function will cause calls to that function to take longer. So if you care about efficiency, put the imports at the top. Only move them into a function if your profiling shows that would help (you did profile to see where best to improve perform...
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git + LaTeX workflow

...ve my work computer and my laptop, and I work on them both. I need to keep all the files synchronized between the two computers, and also would like to keep a revision history. I chose git as my DVCS, and I'm hosting my repository on my server. I'm also using Kile + Okular to do the editing. Kile do...
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Get __name__ of calling function's module in Python

....stack()[1] mod = inspect.getmodule(frm[0]) print '[%s] %s' % (mod.__name__, msg) share | improve this answer | follow | ...
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How efficient is locking an unlocked mutex? What is the cost of a mutex?

... access to the object happens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking. How efficient is it to lock a mutex? I.e. how much assembler instructions are there likely and how much time do they take (...
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Is gettimeofday() guaranteed to be of microsecond resolution?

I am porting a game, that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux). ...
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NUnit Test Run Order

By default nunit tests run alphabetically. Does anyone know of any way to set the execution order? Does an attribute exist for this? ...
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How could I use requests in asyncio?

I want to do parallel http request tasks in asyncio , but I find that python-requests would block the event loop of asyncio . I've found aiohttp but it couldn't provide the service of http request using a http proxy. ...
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Rebase a single Git commit

... how can a question specifically called 'git rebase ...' have the accepted answer than contains a cherry-pick, which is a totally different concept and sometimes per se considered unclean? – Bondax Oct 13 '15 at 9:...
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os.path.dirname(__file__) returns empty

...get the dirname of the absolute path, use os.path.dirname(os.path.abspath(__file__)) share | improve this answer | follow | ...