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Python `if x is not None` or `if not x is None`?
...he if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convention)?*
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Running Python code in Vim
I am writing Python code using Vim, and every time I want to run my code, I type this inside Vim:
20 Answers
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How do I write good/correct package __init__.py files
...s.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is needed
I think one of the most powerful reasons to use import * in an __init__.py to import packages is to be able to refactor a script that has grown into multiple scripts without ...
Understanding “randomness”
I can't get my head around this, which is more random?
28 Answers
28
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Make div (height) occupy parent remaining height
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Expanding the #down child to fill the remaining space of #container can be accomplished in various ways depending on the browser support you wish to achieve and whether or not #up has a defined height.
Samples
.container {...
What is the difference between location list and quickfix list in vim
The following is from the documentation about the quickfix list and location list. But I am not sure what actually different. The image below shows the same things from the location list and quickfix list. When do I use one or another in vimgrep and lvimgrep.
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What do commas and spaces in multiple classes mean in CSS?
Here is an example that I do not understand:
9 Answers
9
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Python, Unicode, and the Windows console
... the solution below with care!!
Here is a page that details the problem and a solution (search the page for the text Wrapping sys.stdout into an instance):
PrintFails - Python Wiki
Here's a code excerpt from that page:
$ python -c 'import sys, codecs, locale; print sys.stdout.encoding; \
s...
How to check if an app is installed from a web-page on an iPhone?
...pp is installed or not.
But you can try redirecting the phone to the app, and if nothing happens redirect the phone to a specified page, like this:
setTimeout(function () { window.location = "https://itunes.apple.com/appdir"; }, 25);
window.location = "appname://";
If the second line of code giv...
How do you count the lines of code in a Visual Studio solution?
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Ultimate and Premium, I think
– Stefan Dragnev
Aug 29 '11 at 16:42
42
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