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How to call a Parent Class's method from Child Class in Python?
...archy in Python, I'd like to be able to invoke methods of the parent class from a derived class. In Perl and Java, there is a keyword for this ( super ). In Perl, I might do this:
...
Chrome Development Tool: [VM] file from javascript
...ces contain the VM magic. This makes it impossible to get the source code [from same origin] for the files in the stacktrace more than once, and you can't cache them, as you don't know which file is which in future stacktraces. This is fixed in Dev Tools, but not in webapps.
– ...
Arrays vs Vectors: Introductory Similarities and Differences [closed]
...
arrays:
are a builtin language construct;
come almost unmodified from C89;
provide just a contiguous, indexable sequence of elements; no bells and whistles;
are of fixed size; you can't resize an array in C++ (unless it's an array of POD and it's allocated with malloc);
their size must be ...
what does the __file__ variable mean/do?
...
When a module is loaded from a file in Python, __file__ is set to its path. You can then use that with other functions to find the directory that the file is located in.
Taking your examples one at a time:
A = os.path.join(os.path.dirname(__file__...
How to pick just one item from a generator?
... else:
do_generator_empty()
If you want "get just one element from the [once generated] generator whenever I like" (I suppose 50% thats the original intention, and the most common intention) then:
gen = myfunct()
while True:
...
if something:
for my_element in gen:
...
Django rest framework, use different serializers in the same ModelViewSet
...would like to provide two different serializers and yet be able to benefit from all the facilities of ModelViewSet :
6 Ans...
Multi-project test dependencies with gradle
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In Gradle 1.8 you may want from sourceSets.test.output and possibly classifier = 'tests' in place of // pack whatever you need... in the answer
– Peter Lamberg
May 26 '14 at 16:30
...
How do I use the nohup command without getting nohup.out?
... it avoids another problem: if a background process tries to read anything from standard input, it will pause, waiting for you to bring it back to the foreground and type something. So the extra-safe version looks like this:
nohup command </dev/null >/dev/null 2>&1 & # completely d...
How to calculate cumulative normal distribution?
...
Here's an example:
>>> from scipy.stats import norm
>>> norm.cdf(1.96)
0.9750021048517795
>>> norm.cdf(-1.96)
0.024997895148220435
In other words, approximately 95% of the standard normal interval lies within two standard deviat...
Meaning of “[: too many arguments” error from if [] (square brackets)
... shells called by /bin/sh etc.
This means on some systems, it might work from the console but not when called elsewhere, like from cron, depending on how everything is configured.
It would look like this:
VARIABLE=$(/some/command);
if [[ $VARIABLE == 0 ]]; then
# some action
fi
If your com...