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How to assign from a function which returns more than one value?
...into the R logic... what is the "best" way to unpack (on LHS) the results from a function returning multiple values?
13 An...
What is the difference between an expression and a statement in Python?
...
Expression -- from the New Oxford American Dictionary:
expression: Mathematics a collection
of symbols that jointly express a
quantity : the expression for the
circumference of a circle is 2πr.
In gross general terms: Express...
What do parentheses surrounding an object/function/class declaration mean? [duplicate]
...those expressions.
It is a useful construct when trying to hide variables from the parent namespace. All the code within the function is contained in the private scope of the function, meaning it can't be accessed at all from outside the function, making it truly private.
See:
http://en.wikipedia...
Why does Path.Combine not properly concatenate filenames that start with Path.DirectorySeparatorChar
From the Immediate Window in Visual Studio:
16 Answers
16
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Why use Abstract Base Classes in Python?
...but a shared understanding of what those methods should do. If you inherit from this ABC, you are promising to follow all the rules described in the comments, including the semantics of the print() method.
Python's duck-typing has many advantages in flexibility over static-typing, but it doesn't sol...
How to terminate a Python script
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import sys
sys.exit()
details from the sys module documentation:
sys.exit([arg])
Exit from Python. This is implemented by raising the
SystemExit exception, so cleanup actions specified by finally clauses
of try statements are honored, and it is possib...
Wildcards in a Windows hosts file
...uter) with its own hosts file. The hosts file accepts wildcards.
Download from the offical website
http://mayakron.altervista.org/support/browse.php?path=Acrylic&name=Home
Configuring Acrylic DNS Proxy
To configure Acrylic DNS Proxy, install it from the above link then go to:
Start
Program...
How to make exe files from a node.js app?
...ip up all your files, with a package.json in the root
Change the extension from .zip to .nw
copy /b nw.exe+app.nw app.exe
Just as an added note - I've shipped several production box/install cd applications using this, and it's worked great. Same app runs on windows, mac, linux and over the web.
U...
Standard way to embed version into python package?
...laced after the module docstring but before any import
statements except from __future__ imports.
You should also make sure that the version number conforms to the format described in PEP 440 (PEP 386 a previous version of this standard).
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When saving, how can you check if a field has changed?
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I use following mixin:
from django.forms.models import model_to_dict
class ModelDiffMixin(object):
"""
A model mixin that tracks model fields' values and provide some useful api
to know what fields have been changed.
"""
def ...