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What's the difference between globals(), locals(), and vars()?
...als() always returns a dictionary of the current namespace
vars() returns either a dictionary of the current namespace (if called with no argument) or the dictionary of the argument.
locals and vars could use some more explanation. If locals() is called inside a function, it updates a dict with t...
How do you calculate the average of a set of circular data? [closed]
...mples from the reading of a compass. The problem of course is how to deal with the wraparound. The same algorithm might be useful for a clockface.
...
Event system in Python
...2.1.2: 2017
axel 0.0.7: 2016
blinker 1.4: 2015
PyDispatcher 2.0.5: 2015
pymitter 0.2.3: 2014
dispatcher 1.0: 2012
py-notify 0.3.1: 2008
There's more
That's a lot of libraries to choose from, using very different terminology (events, signals, handlers, method dispatch, hooks, ...).
I'm trying to kee...
Django 1.7 - makemigrations not detecting changes
As the title says, I can't seem to get migrations working.
29 Answers
29
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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)
I want to create a C macro that creates a function with a name based
on the line number.
I thought I could do something like (the real function would have statements within the braces):
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Count number of records returned by group by
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This down side of this solution is that it gives you the answer multiple times (for each combination of column_1, column_2, column_3, column_4). This may or may not be a significant side-effect, depending on how you process the results.
– car...
Convert sqlalchemy row object to python dict
Is there a simple way to iterate over column name and value pairs?
36 Answers
36
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What does $_ mean in PowerShell?
I've seen the following a lot in PowerShell, but what does it do exactly?
6 Answers
6
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Fix warning “Capturing [an object] strongly in this block is likely to lead to a retain cycle” in AR
... says that using keyword block and setting the variable to nil after using it inside the block should be ok, but it still shows the warning.
__block ASIHTTPRequest *request = [[ASIHTTPRequest alloc] initWithURL:...
[request setCompletionBlock:^{
NSDictionary *jsonDictionary = [[CJSONDeserializ...
How to check version of python modules?
I just installed the python modules: construct and statlib with setuptools like this:
25 Answers
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