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How do I find the location of my Python site-packages directory?
... you a list of all installed per user site-packages.
Practical Tips
<package>.__path__ lets you identify the location(s) of a specific package: (details)
$ python -c "import setuptools as _; print(_.__path__)"
['/usr/lib/python2.7/dist-packages/setuptools']
<module>.__file__ lets...
MySQL Cannot drop index needed in a foreign key constraint
I need to ALTER my existing database to add a column. Consequently I also want to update the UNIQUE field to encompass that new column. I'm trying to remove the current index but keep getting the error MySQL Cannot drop index needed in a foreign key constraint
...
json.net has key method?
...
JObject implements IDictionary<string, JToken>, so you can use:
IDictionary<string, JToken> dictionary = x;
if (dictionary.ContainsKey("error_msg"))
... or you could use TryGetValue. It implements both methods using explicit interface implem...
How to pause / sleep thread or process in Android?
...oid run() {
my_button.setBackgroundResource(R.drawable.defaultcard);
}
}, 2000);
}
However, some have pointed out that the solution above causes a memory leak because it uses a non-static inner and anonymous class which implicitly holds a reference to its outer class...
GPU Emulator for CUDA programming without the hardware [closed]
...A Toolkit 3.0, installed it and tried to run a simple
program:
#include <stdio.h>
__global__ void helloWorld() {
printf("Hello world! I am %d (Warp %d) from %d.\n",
threadIdx.x, threadIdx.x / warpSize, blockIdx.x);
}
int main() {
int blocks, threads;
scanf("%d%d", &...
What is the difference between __init__ and __call__?
...rom init ...
>>> a()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: A instance has no __call__ method
>>>
>>> class B:
... def __init__(self):
... print "From init ... "
... def __call__(self):
... ...
Simple way to create matrix of random numbers
...s() is deprecated
random_matrix = numpy.random.randint(min_val,max_val,(<num_rows>,<num_cols>))
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Get a substring of a char* [duplicate]
...
Don't forget to #include <string.h>.
– Juampi
Jan 18 '14 at 4:03
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show 4 more commen...
How to get the date from jQuery UI datepicker
... but datepicker is show or today or nothing. I decided it in a such way:
<input type="text" class="form-control datepicker" data-value="<?= date('d-m-Y', (!$event->date ? time() : $event->date)) ?>" value="<?= date('d-m-Y', (!$event->date ? time() : $event->date)) ?>" /&g...
Adding information to an exception?
...g1')
Traceback (most recent call last):
File "test.py", line 13, in <module>
bar('arg1')
File "test.py", line 11, in bar
raise type(e)(e.message + ' happens at %s' % arg1)
IOError: Stuff happens at arg1
Update 1
Here's a slight modification that preserves the original traceb...