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How do I check which version of NumPy I'm using?
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Since the use of __version__ in recommended in PEP8 and most packages support __version__ vs the non standard version.version I think that this answer should be treated more as a curiosity than an accepted method. Use numpy.__version__ or <package>.__version__ as Dominic...
MySQL: What's the difference between float and double?
...ndering why, I checked the mysql documentation, but honestly didn't understand what the difference is.
6 Answers
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How to parse/read a YAML file into a Python object? [duplicate]
...nch2:
name: Node 2
branch2-1:
name: Node 2-1
And you've installed PyYAML like this:
pip install PyYAML
And the Python code looks like this:
import yaml
with open('tree.yaml') as f:
# use safe_load instead load
dataMap = yaml.safe_load(f)
The variable dataM...
How to rename items in values() in Django?
...May 15 '12 at 10:45
Daniel RosemanDaniel Roseman
521k5151 gold badges699699 silver badges746746 bronze badges
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What is the proper way to comment functions in Python?
...nt.
def add(self):
"""Create a new user.
Line 2 of comment...
And so on...
"""
That's three double quotes to open the comment and another three double quotes to end it. You can also use any valid Python string. It doesn't need to be multiline and double quotes can be replaced by ...
Xcode doesn't show the line that causes a crash
...Xcode, click on the breakpoint navigator (almost all the way to the right hand side of the top button bar. The icon looks like a fat right arrow).
At the bottom of the navigator, click the "+" button.
Click "Add Exception Breakpoint".
A new breakpoint will be created. It should be configured as ne...
Why is SQL Server 2008 Management Studio Intellisense not working?
... why Intellisense just fails to work at all. The server I'm using is local and is 2008, the database is set to 2008 compatibility, Intellisense is on in every menu I can find, and yet no member list will pop up even with a CTRL-J.
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Abstract methods in Python [duplicate]
...seems too easy for me in Java yet up till now I have been unable to understand in Python which is surprising to me at least.
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How can I implement a tree in Python?
...cation
pre-order tree iteration
post-order tree iteration
resolve relative and absolute node paths
walking from one node to an other.
tree rendering (see example above)
node attach/detach hookups
share
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performSelector may cause a leak because its selector is unknown
...s for a reason. It's very rare that this warning should simply be ignored, and it's easy to work around. Here's how:
if (!_controller) { return; }
SEL selector = NSSelectorFromString(@"someMethod");
IMP imp = [_controller methodForSelector:selector];
void (*func)(id, SEL) = (void *)imp;
func(_contr...