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Can a decorator of an instance method access the class?
...ss of an instance method from a decorator used upon the instance method in its definition.
13 Answers
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method of iterating over sqlalchemy model's defined columns?
I've been trying to figure out how to iterate over the list of columns defined in a SQLAlchemy model. I want it for writing some serialization and copy methods to a couple of models. I can't just iterate over the obj.__dict__ since it contains a lot of SA specific items.
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Get class that defined method
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edited Jun 20 '14 at 19:44
Aaron Hall♦
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How to implement a good __hash__ function in python [duplicate]
When implementing a class with multiple properties (like in the toy example below), what is the best way to handle hashing?
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How do I get the path and name of the file that is currently executing?
...iles but I need to get the filepath of the file that is currently running within the process.
29 Answers
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How can I get the version defined in setup.py (setuptools) in my package?
...file's contents in setup.py.
You could make a version.py in your package with a __version__ line, then read it from setup.py using execfile('mypackage/version.py'), so that it sets __version__ in the setup.py namespace.
If you want a much simpler way that will work with all Python versions and eve...
Evaluating a mathematical expression in a string
...hematical expressions. In particular, fourFn.py
shows how to parse basic arithmetic expressions. Below, I've rewrapped fourFn into a numeric parser class for easier reuse.
from __future__ import division
from pyparsing import (Literal, CaselessLiteral, Word, Combine, Group, Optional,
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Absolute vs relative URLs
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In general, it is considered best-practice to use relative URLs, so that your website will not be bound to the base URL of where it is currently deployed. For example, it will be able to work on localhost, as well as on your public domai...
How to set the prototype of a JavaScript object that has already been instantiated?
...have an object foo in my JavaScript code. foo is a complex object and it is generated somewhere else. How can I change the prototype of the foo object?
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What does “mro()” do?
...gt;, <type 'object'>)
>>>
As long as we have single inheritance, __mro__ is just the tuple of: the class, its base, its base's base, and so on up to object (only works for new-style classes of course).
Now, with multiple inheritance...:
>>> class D(B, C): pass
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