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Why is reading lines from stdin much slower in C++ than Python?
...rs, this could lead to a problem if both were used together. For example:
int myvalue1;
cin >> myvalue1;
int myvalue2;
scanf("%d",&myvalue2);
If more input was read by cin than it actually needed, then the second integer value wouldn't be available for the scanf function, which has its o...
Having options in argparse with a dash
...nd stripping away the initial -- string. Any internal - characters will be converted to _ characters to make sure the string is a valid attribute name
So you should be using args.pm_export.
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dd: How to calculate optimal blocksize? [closed]
...optimal block size:
#include <sys/stat.h>
#include <stdio.h>
int main(void)
{
struct stat stats;
if (!stat("/", &stats))
{
printf("%u\n", stats.st_blksize);
}
}
The best way may be to experiment: copy a gigabyte with various block sizes and time that. (Re...
How can I save an image with PIL?
...port sys
import numpy
from PIL import Image
img = Image.open(sys.argv[1]).convert('L')
im = numpy.array(img)
fft_mag = numpy.abs(numpy.fft.fftshift(numpy.fft.fft2(im)))
visual = numpy.log(fft_mag)
visual = (visual - visual.min()) / (visual.max() - visual.min())
result = Image.fromarray((visual *...
How do I plot in real-time in a while loop using matplotlib?
.../motivation that would be great. (seems like this new blit operation would convert Matplotlib from only use for offline or very slowly changing data to now you can use Matplotlib with very fast updating data... almost like an oscilloscope).
– Trevor Boyd Smith
...
Importing a CSV file into a sqlite3 database table using Python
...
I keep getting not all arguments converted during string formatting when I attempt this method.
– Whitecat
Sep 1 '16 at 23:27
...
Finding current executable's path without /proc/self/exe
...se, you probably want the client context so canonicalization is ok. Also convert patterns like "/./" to "/" and "//" to "/".
In shell, readlink --canonicalize will resolve multiple symlinks and canonicalize name. Chase may do similar but isn't installed. realpath() or canonicalize_file_name(...
Writing Unicode text to a text file?
... the way out.
If your string is actually a unicode object, you'll need to convert it to a unicode-encoded string object before writing it to a file:
foo = u'Δ, Й, ק, م, ๗, あ, 叶, 葉, and 말.'
f = open('test', 'w')
f.write(foo.encode('utf8'))
f.close()
When you read that file again...
Find the files existing in one directory but not in the other [closed]
...that does exactly what I wanted: Verify a bulk copy: +1 from me. (neeed to convert to python2 though) Hint: use of sets might make the diff part simpler.
– Jason Morgan
Suppress/ print without b' prefix for bytes in Python 3
...
If the data is in an UTF-8 compatible format, you can convert the bytes to a string.
>>> import curses
>>> print(str(curses.version, "utf-8"))
2.2
Optionally convert to hex first, if the data is not already UTF-8 compatible. E.g. when the data are actual raw...