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What's the common practice for enums in Python? [duplicate]
...looking for something more robust (sparse values, enum-specific exception, etc.), try this recipe.
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What is the best django model field to use to represent a US dollar amount?
... show it to the final user in the representation that you want (BTC, mBTC, etc)
– jion
Jan 21 '18 at 6:01
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How to use timeit module
...tter_minmod arr1
python -m timeit -s "$SETUP" "better_minmod(arr1)"
... etc
This can take a bit longer due to the multiple initialisations, but normally that's not a big deal.
But what if you want to use timeit inside your module?
Well, the simple way is to do:
def function(...):
...
...
Django - how to create a file and save it to a model's FileField?
...ite existing file, storing to the right spot, not creating duplicate files etc).
Django 1.4.1
Python 2.7.3
#Model
class MonthEnd(models.Model):
report = models.FileField(db_index=True, upload_to='not_used')
import csv
from os.path import join
#build and store the file
def write_csv():
p...
What is the difference between lock and Mutex?
...re are several other "minor" differences, like how abandonment is handled, etc.
The same can be said about ReaderWriterLock and ReaderWriterLockSlim in 3.5, Semaphore and the new SemaphoreSlim in .NET 4.0 etc.
It is true that the latter xxSlim classes cannot be used as a system-wide sync primitives...
How to elegantly ignore some return values of a MATLAB function?
...can then call
val_i_want = kthout(3,@myfunc,func_input_1,func_input_2); %etc
you could also wrap up the function like
func_i_want = @(varargin)(kthout(3,@myfunc,varargin{:})); %assuming you want the 3rd output.
after which you use
val_i_want = func_i_want(func_input_1,func_input_2);
note ...
Saving an Object (Data persistence)
...kler = pickle.Pickler(output, -1)
pickler.dump(obj1)
pickler.dump(obj2)
etc...
Note: If you're in an environment running different versions of Python, then you'll probably want to explicitly use (i.e. hardcode) a specific protocol number that all of them can read (later versions can generally r...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...ick, btnCancel_Click,LoadUserData(strUsername), SaveUserData(strUserData), etc... and each of your DLL will have to implement them.
You may have your script to do a complete task and you will load the script file based on the task (theCScriptObject class can load a script file for you!).
Exampl...
What are the applications of binary trees?
... Merkle Trees, at least within the bitcoin and ethereum communities, IPFS, etc.
– Duke
Apr 21 '16 at 20:50
1
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Why doesn't Python have a sign function?
...didn't agree on what it should return in all the edge cases (+/-0, +/-nan, etc)
So they decided to implement only copysign, which (although more verbose) can be used to delegate to the end user the desired behavior for edge cases - which sometimes might require the call to cmp(x,0).
I don't know...