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How does zip(*[iter(s)]*n) work in Python?
... each element is x. *arg unpacks a sequence into arguments for a function call. Therefore you're passing the same iterator 3 times to zip(), and it pulls an item from the iterator each time.
x = iter([1,2,3,4,5,6,7,8,9])
print zip(x, x, x)
...
Backwards migration with Django South
Ok, so this seems like a really silly thing to ask, and I'm sure I'm missing something somewhere.
3 Answers
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Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
...e that is what the string you're returning (and the short description) actually reference? Or change string format argument to obj.book.reviews?
– Carl G
Jun 20 '12 at 19:12
1
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Setting up two different static directories in node.js Express framework
...nal (first) parameter to use() like so:
app.use("/public", express.static(__dirname + "/public"));
app.use("/public2", express.static(__dirname + "/public2"));
That way you get two different directories on the web that mirror your local directories, not one url path that fails over between two lo...
How does the C# compiler detect COM types?
...peech API, where you're able to "instantiate" the interface SpVoice (but really, you're instantiating SPVoiceClass).
[CoClass(typeof(SpVoiceClass))]
public interface SpVoice : ISpeechVoice, _ISpeechVoiceEvents_Event { }
sh...
Find unique rows in numpy.array
...e((np.void, a.dtype.itemsize * a.shape[1]))) ?
– Akavall
Jun 7 '13 at 0:28
3
@Akavall It is creat...
Is it possible to implement a Python for range loop without an iterator variable?
...ou can just live with the extra i variable.
Here is the option to use the _ variable, which in reality, is just another variable.
for _ in range(n):
do_something()
Note that _ is assigned the last result that returned in an interactive python session:
>>> 1+2
3
>>> _
3
F...
How to pattern match using regular expression in Scala?
...ter match {
case Pattern(c) => c bound to capture group here
case _ =>
}
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How to see which flags -march=native will activate?
I'm compiling my C++ app using GCC 4.3. Instead of manually selecting the optimization flags I'm using -march=native , which in theory should add all optimization flags applicable to the hardware I'm compiling on. But how can I check which flags is it actually using?
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Show all Elasticsearch aggregation results/buckets and not just 10
I'm trying to list all buckets on an aggregation, but it seems to be showing only the first 10.
4 Answers
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