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How to add property to a class dynamically?
...a thing called a descriptor. It's an object that provides custom handling for a given attribute, on a given class. Kinda like a way to factor a huge if tree out of __getattribute__.
When I ask for foo.b in the example above, Python sees that the b defined on the class implements the descriptor pr...
Run function from the command line
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For some reason, this didn't work for me, while replacing print foo.hello() with print(foo.hello()) did. I don't have the python knowledge to explain why this is, so if someone else could explain what can be going on, that wo...
What is the most pythonic way to check if an object is a number?
...ber
... from decimal import Decimal
... from fractions import Fraction
... for n in [2, 2.0, Decimal('2.0'), complex(2, 0), Fraction(2, 1), '2']:
... print(f'{n!r:>14} {isinstance(n, Number)}')
2 True
2.0 True
Decimal('2.0') True
(2+0j) True
Fraction(2, 1)...
How to get a reference to a module inside the module itself?
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except for this won't be quite correct if module is reloaded; I don't think there's any place where a reference is guaranteed to be kept, if there was, reloading wouldn't really work, right?
– Dima Tisnek
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Can I redirect the stdout in python into some sort of string buffer?
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I think there is no need to add try/finally block for this solution.
– snr
Jul 16 '18 at 14:50
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Get absolute path of initially run script
...silver bullet way to get the absolute path of the executed script in PHP? For me, the script will run from the command line, but, a solution should function just as well if run within Apache etc.
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Using property() on classmethods
I have a class with two class methods (using the classmethod() function) for getting and setting what is essentially a static variable. I tried to use the property() function with these, but it results in an error. I was able to reproduce the error with the following in the interpreter:
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Is gcc 4.8 or earlier buggy about regular expressions?
... highly experimental, tracking early C++0x drafts and being made available for people to experiment with. That allowed people to find problems and give feedback to the standard committee before the standard was finalised. At the time lots of people were grateful to have had access to bleeding edge f...
os.path.dirname(__file__) returns empty
...s a bold where there should be underline on both sides because of markdown formatting. the original answer was changed correctly
– watsonic
Mar 29 '16 at 1:38
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What is __stdcall?
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__stdcall is the calling convention used for the function. This tells the compiler the rules that apply for setting up the stack, pushing arguments and getting a return value.
There are a number of other calling conventions, __cdecl, __thiscall, __fastcall and the...