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Is generator.next() visible in Python 3?
...son for this is consistency: special methods like __init__() and __del__() all have double underscores (or "dunder" in the current vernacular), and .next() was one of the few exceptions to that rule. This was fixed in Python 3.0. [*]
But instead of calling g.__next__(), use next(g).
[*] There are ...
Django database query: How to get object by id?
Django automatically creates an id field as primary key.
6 Answers
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Makefile经典教程（入门必备） - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...个变量，其值是一个空格，那么我们可以这样来：
nullstring :=
space := $(nullstring) # end of the line
nullstring 是一个Empty变量，其中什么也没有，而我们的space的值是一个空格。因为在操作符的右边是很难描述一个空格的，这里采...
How to detect if a script is being sourced
I have a script where I do not want it to call exit if it's being sourced.
17 Answers
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Unpacking, extended unpacking and nested extended unpacking
...our code may be misleading use other form to express it.
It's like using extra brackets in expressions to avoid questions about operators precedence.
I'ts always a good investment to make your code readable.
I prefer to use unpacking only for simple tasks like swap.
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mysql -> insert into tbl (select from another table) and some default values [duplicate]
...
If you want to insert all the columns then
insert into def select * from abc;
here the number of columns in def should be equal to abc.
if you want to insert the subsets of columns then
insert into def (col1,col2, col3 ) select scol1,scol2,...
How to add Google Analytics Tracking ID to GitHub Pages
... I have added them, however Google analytics say the Tracking is not installed. My page as specified in G-Analytics is http://avi-aryan.github.io
– Avi
Jul 15 '13 at 12:33
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Programmatically generate video or animated GIF in Python?
I have a series of images that I want to create a video from. Ideally I could specify a frame duration for each frame but a fixed frame rate would be fine too. I'm doing this in wxPython, so I can render to a wxDC or I can save the images to files, like PNG. Is there a Python library that will al...
How to set the java.library.path from Eclipse
...gger = Logger.getLogger(Test.class.getName());
public static void main(String[] args) {
logger.info(System.getProperty("java.library.path"));
}
}
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What's the difference between using CGFloat and float?
I tend to use CGFloat all over the place, but I wonder if I get a senseless "performance hit" with this. CGFloat seems to be something "heavier" than float, right? At which points should I use CGFloat, and what makes really the difference?
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