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Explicitly select items from a list or tuple
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154
list( myBigList[i] for i in [87, 342, 217, 998, 500] )
I compared the answers with python 2...
How to change the port of Tomcat from 8080 to 80?
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215
1) Go to conf folder in tomcat installation directory
e.g. C:\Tomcat 6.0\conf\
2) Edit follo...
Caveats of select/poll vs. epoll reactors in Twisted
..., 100, then that's roughly twice as expensive as selecting on a single fd, 50. Adding more fds below the highest isn't quite free, so it's a little more complicated than this in practice, but this is a good first approximation for most implementations.
The cost of epoll is closer to the number of ...
Identifying the dependency relationship for python packages installed with pip
...g.:
$ pipdeptree
Lookupy==0.1
wsgiref==0.1.2
argparse==1.2.1
psycopg2==2.5.2
Flask-Script==0.6.6
- Flask [installed: 0.10.1]
- Werkzeug [required: >=0.7, installed: 0.9.4]
- Jinja2 [required: >=2.4, installed: 2.7.2]
- MarkupSafe [installed: 0.18]
- itsdangerous [required...
Version number comparison in Python
...mycmp("1.2", "2.1") < 0
assert mycmp("2.1", "1.2") > 0
assert mycmp("5.6.7", "5.6.7") == 0
assert mycmp("1.01.1", "1.1.1") == 0
assert mycmp("1.1.1", "1.01.1") == 0
assert mycmp("1", "1.0") == 0
assert mycmp("1.0", "1") == 0
assert mycmp("1.0", "1.0.1") < 0
assert mycmp("1.0.1", "1.0") >...
Is there a built in function for string natural sort?
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251
There is a third party library for this on PyPI called natsort (full disclosure, I am the packa...
How can I represent an infinite number in Python?
...
In Python, you can do:
test = float("inf")
In Python 3.5, you can do:
import math
test = math.inf
And then:
test > 1
test > 10000
test > x
Will always be true. Unless of course, as pointed out, x is also infinity or "nan" ("not a number").
Additionally (Python 2.x...
__FILE__, __LINE__, and __FUNCTION__ usage in C++
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edited Mar 13 '17 at 13:15
answered Feb 27 '09 at 23:28
Ev...
What are some compelling use cases for dependent method types?
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edited Aug 14 '14 at 18:53
Gabriele Petronella
99.8k2020 gold badges198198 silver badges222222 bronze badges
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How can I link to a specific glibc version?
...se of glibc’s realpath, but makes sure it is linked against an older 2.2.5 version.
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
__asm__(".symver realpath,realpath@GLIBC_2.2.5");
int main()
{
const char* unresolved = "/lib64";
char resolved[PATH_MAX+1];
...