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How to find all the subclasses of a class given its name?
...ng approach of getting all classes that are inherited from a base class in Python.
10 Answers
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Check if key exists and iterate the JSON array using Python
I have a bunch of JSON data from Facebook posts like the one below:
7 Answers
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Syntax highlighting/colorizing cat
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I'd recommend pygmentize from the python package python-pygments. You may want to define the following handy alias (unless you use ccat from the ccrypt package).
alias ccat='pygmentize -g'
And if you want line numbers:
alias ccat='pygmentize -g -O style...
How do I get indices of N maximum values in a NumPy array?
... @LKT use a=np.array([9, 4, 4, 3, 3, 9, 0, 4, 6, 0]) because normal python lists do not support indexing by lists, unlike np.array
– Marawan Okasha
Aug 8 '17 at 19:34
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Using pip behind a proxy with CNTLM
...ve your issue, try running pip with commandline option --trusted-host pypi.python.org which did the trick for me.
– Petr
Jan 4 '19 at 8:23
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How can I build a small operating system on an old desktop computer? [closed]
... is the one we used in my OS class in college:
Modern Operating Systems PDF
Modern Operating Systems on Amazon
Despite the ridiculous cover, it's a fantastic read, especially for a textbook. Tanenbaum is really an expert in this area and his explanations of how the OS works underneath the hoo...
XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
...n be as trivial as cding into the directory the files are in and running:
python -m SimpleHTTPServer
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Input and output numpy arrays to h5py
I have a Python code whose output is a sized matrix, whose entries are all of the type float . If I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I ...
What is the purpose and use of **kwargs?
What are the uses for **kwargs in Python?
13 Answers
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Why is early return slower than else?
...88136 which reduced modulo 32 is 8 so there's a collision. To resolve this Python calculates:
Starting with:
j = hash % 32
perturb = hash
Repeat this until we find a free slot:
j = (5*j) + 1 + perturb;
perturb >>= 5;
use j % 2**i as the next table index;
which gives it 17 to use as the ...