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Weighted random numbers
I'm trying to implement a weighted random numbers. I'm currently just banging my head against the wall and cannot figure this out.
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When should iteritems() be used instead of items()?
...places? Why was iteritems() removed from Python 3? Seems like a terrific and useful method. What's the reasoning behind it?
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what is the right way to treat Python argparse.Namespace() as a dictionary?
...t is okay to access the __dict__ attribute. It is a well-defined, tested, and guaranteed behavior.
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How do I get bash completion to work with aliases?
..._git_complete g __git_main to get code completition working on all git commands.
– Ondrej Machulda
Apr 15 '13 at 12:03
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Named routes _path vs _url
...st of the time.
_url helpers provide an absolute path, including protocol and server name. I've found that I mainly use these in emails when creating links to the app on the server. They should mainly be used when providing links for external use. (Think email links, RSS, and things like the copy a...
How to write to a file, using the logging Python module?
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An example of using logging.basicConfig rather than logging.fileHandler()
logging.basicConfig(filename=logname,
filemode='a',
format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
datefmt='%H:...
Why is early return slower than else?
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This is a pure guess, and I haven't figured out an easy way to check whether it is right, but I have a theory for you.
I tried your code and get the same of results, without_else() is repeatedly slightly slower than with_else():
>>> T(l...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...he compiler from aligning the fields according to their natural alignment, and it has no relation to the problem of field ordering. It would be possible to reorder the fields of LocalFileHeader so that the structure has both minimal size and has all fields aligned to their natural alignment. However...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1...
... &”
with
[
_Ty=double
]
and
[
_Ty=int
]
and
[
_Ty=double
]
原因如下: 无法从“std::vector<_Ty>”转换为“const std::allocator<_Ty>”
with
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In Python, how do I read the exif data for an image?
...r python3 use Pillow. It is a fork of PIL, which is still being developed, and has a python3 compatible version
– Mzzl
Jan 15 '14 at 9:54
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