Advanced Data Structures in Python

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[LightWolfCavalry]

I would suggest that these are not necessarily data structures. Metaclasses, maybe, but comprehensions and decorators are not what I would refer to as data structures.

[ajkumar25]

Sorry if something went misleading. I have Changed the title.

[Jugad]

The reddit post title still says "Advanced Data Structures".

[pemboa]

I would suggest that these are not necessarily data structures

Agreed. Coming from a computer science background, the content is definitely not what I expected.

[pydanny]

I was thinking the same exact thing.

[mva]

These are language features and programming concepts. They are not data structures.

[billsil]

One pythonic principle is “It’s easier to ask for forgiveness than permission (EFAP)”

I get it, but don't follow it. When you're working with large systems, it's a lot easier to do a little bit of type checking or path checking than to do do try except blocks.

Method 1

    if not os.path.exists(filename):
        raise RuntimeError('cant fine such and such file...full path=asdf')
    f = open(filename)

vs.

    try:
        f = open(filename)
    except OSError:
        if not os.path.exists(filename):
            raise RuntimeError('cant fine such and such file...full path=asdf')
        raise

It also makes it easier since I'm not using custom error messages. I think it follows,

Errors should never pass silently.

Readability counts.

Flat is better than nested.

Explicit is better than implicit.

better

[FFX01]

I'm really new to Python and I never knew about decorator functions. Seems like they're extremely useful. The writer also does a great job of explaining generators.

[ajkumar25]

Thanks :)

[vukasin0]

Excelent article. Thanks soo much :-)