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How to make a Python script run like a service or daemon in Linux
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Here's a nice class that is taken from here:
#!/usr/bin/env python
import sys, os, time, atexit
from signal import SIGTERM
class Daemon:
"""
A generic daemon class.
Usage: subclass the Daemon class and override the run() method
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Returning an array using C
...ely new to C and I need some help with methods dealing with arrays. Coming from Java programming, I am used to being able to say int [] method() in order to return an array. However, I have found out that with C you have to use pointers for arrays when you return them. Being a new programmer, I rea...
What are the differences between json and simplejson Python modules?
...have seen many projects using simplejson module instead of json module from the Standard Library. Also, there are many different simplejson modules. Why would use these alternatives, instead of the one in the Standard Library?
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How do I export UIImage array as a movie?
...ay with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
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what does the __file__ variable mean/do?
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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 pass arguments and redirect stdin from a file to program run in gdb?
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Pass the arguments to the run command from within gdb.
$ gdb ./a.out
(gdb) r < t
Starting program: /dir/a.out < t
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Suppress Scientific Notation in Numpy When Creating Array From Nested List
... blasted in the face with a page full of numbers.
Full example Demo 1:
from pprint import pprint
import numpy as np
#chaotic python list of lists with very different numeric magnitudes
my_list = [[3.74, 5162, 13683628846.64, 12783387559.86, 1.81],
[9.55, 116, 189688622.37, 260332262.0...
How do I get hour and minutes from NSDate?
...rmat:@"<your date format goes here"];
NSDate *date = [dateFormatter dateFromString:string1];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:(NSCalendarUnitHour | NSCalendarUnitMinute) fromDate:date];
NSInteger hour = [components hour];
NSI...
How do I efficiently iterate over each entry in a Java Map?
...p.entrySet()) {
i += pair.getKey() + pair.getValue();
}
Using forEach from Java 8
final long[] i = {0};
map.forEach((k, v) -> i[0] += k + v);
Using keySet and foreach
long i = 0;
for (Integer key : map.keySet()) {
i += key + map.get(key);
}
Using keySet and iterator
long i = 0;
Iter...
How to sort my paws?
...nts where it did work to build up a training dataset (of ~2000 paw impacts from ~30 different dogs) to recognize which paw is which, and the problem reduces to a supervised classification (With some additional wrinkles... Image recognition is a bit harder than a "normal" supervised classification pr...