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Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...ython process in question just before the ENOMEM?
Under kernel 2.6, /proc/sys/vm/swappiness controls how aggressively the kernel will turn to swap, and overcommit* files how much and how precisely the kernel may apportion memory with a wink and a nod. Like your facebook relationship status, it's c...
Converting unix timestamp string to readable date
...presenting a unix timestamp (i.e. "1284101485") in Python, and I'd like to convert it to a readable date. When I use time.strftime , I get a TypeError :
...
How to cat a file containing code?
...-v---v------
cat <<'EOF' >> brightup.sh
#!/bin/bash
curr=`cat /sys/class/backlight/intel_backlight/actual_brightness`
if [ $curr -lt 4477 ]; then
curr=$((curr+406));
echo $curr > /sys/class/backlight/intel_backlight/brightness;
fi
EOF
IHTH
...
How do I create a URL shortener?
...
I would continue your "convert number to string" approach. However, you will realize that your proposed algorithm fails if your ID is a prime and greater than 52.
Theoretical background
You need a Bijective Function f. This is necessary so that y...
How to start a background process in Python?
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If you want your process to start in the background you can either use system() and call it in the same way your shell script did, or you can spawn it:
import os
os.spawnl(os.P_DETACH, 'some_long_running_command')
(or, alternatively, you may try the less portable os.P_NOWAIT flag).
See the d...
Checking whether a variable is an integer or not [duplicate]
...x/x.).is_integer():
# do something special
Edit:
You can always convert to a float before calling this method. The three possibilities:
>>> float(5).is_integer()
True
>>> float(5.1).is_integer()
False
>>> float(5.0).is_integer()
True
Otherwise, you could chec...
Parse v. TryParse
...
If the string can not be converted to an integer, then
int.Parse() will throw an exception
int.TryParse() will return false (but not throw an exception)
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How do I see the current encoding of a file in Sublime Text?
...ugin you can view the encoding of the file on the status bar. Also you can convert the encoding of the file and extended another functionalities.
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How to convert NSNumber to NSString
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The funny thing is that NSNumber converts to string automatically if it becomes a part of a string. I don't think it is documented.
Try these:
NSLog(@"My integer NSNumber:%@",[NSNumber numberWithInt:184]);
NSLog(@"My float NSNumber:%@",[NSNumber numberWithF...
surface plots in matplotlib
...ceforge.net/mpl_examples/mplot3d/surface3d_demo.py
here's pythonic way to convert your 3-tuples to 3 1d arrays.
data = [(1,2,3), (10,20,30), (11, 22, 33), (110, 220, 330)]
X,Y,Z = zip(*data)
In [7]: X
Out[7]: (1, 10, 11, 110)
In [8]: Y
Out[8]: (2, 20, 22, 220)
In [9]: Z
Out[9]: (3, 30, 33, 330)
...