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How to start a background process in Python?
... the PATH variable and the variant that does use it is not available under Windows.
– sorin
Oct 28 '09 at 17:14
36
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Print number of keys in Redis
...b63575307aaffe0a
redis_mode:standalone
os:Linux 5.4.0-1017-aws x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:9.3.0
process_id:2854672
run_id:90a5246f10e0aeb6b02cc2765b485d841ffc924e
tcp_port:6379
uptime_in_seconds:2593097
uptime_in_days:30
hz:10
configured_hz:10...
What are the advantages of NumPy over regular Python lists?
...definitely would for a billion cells -- neither approach would fit in a 32-bit architecture, but with 64-bit builds NumPy would get away with 4 GB or so, Python alone would need at least about 12 GB (lots of pointers which double in size) -- a much costlier piece of hardware!
The difference is most...
Why is XOR the default way to combine hashes?
...
Assuming uniformly random (1-bit) inputs, the AND function output probability distribution is 75% 0 and 25% 1. Conversely, OR is 25% 0 and 75% 1.
The XOR function is 50% 0 and 50% 1, therefore it is good for combining uniform probability distributions.
...
How to read a single character from the user?
... and it is returned (sort of like getch() ). I know there's a function in Windows for it, but I'd like something that is cross-platform.
...
How do I view cookies in Internet Explorer 11 using Developer Tools
...Well, I guess this kind of explains why, whenever I've finished installing Windows 10 on a new laptop, my first port of call is to go and download Chrome. Microsoft just doesn't do user-friendly very well, do they...? ;-)
– Mike Gledhill
May 25 '18 at 7:43
...
How to write WinForms code that auto-scales to system font and dpi settings?
Intro: There's a lot of comments out there that say "WinForms doesn't auto-scale to DPI/font settings well; switch to WPF." However, I think that is based on .NET 1.1; it appears they actually did a pretty good job of implementing auto-scaling in .NET 2.0. At least based on our research and testing...
Web-scraping JavaScript page with Python
...lt:
2.1.1
Example
To give an example, I created a sample page with following HTML code. (link):
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Javascript scraping test</title>
</head>
<body>
<p id='intro-text'>No javascript...
How to save a PNG image server-side, from a base64 data string
...swered Jul 16 '12 at 19:55
drew010drew010
63.1k1010 gold badges116116 silver badges146146 bronze badges
...
The tilde operator in Python
...ing bytes. It is the "invert" or "complement" operation, in which all the bits of the input data are reversed.
In Python, for integers, the bits of the twos-complement representation of the integer are reversed (as in b <- b XOR 1 for each individual bit), and the result interpreted again as a ...