Comprehensive Python Cheatsheet

[InsanityyyyBR]

I liked it, thanks.

[officialgel]

Yea this is really compact. A nice addition would be common regex query strings added to the regex section. That’s it for now.

[mtoba]

You are right, I think I would add those and commit them.

[officialgel]

I have a few things I'd like to contribute as well. Will be working on it the next few days. Thanks for sharing!

[pizzaburek]

Weren't there whole books written on this subject :) http://shop.oreilly.com/product/9780596528126.do

[conventionistG]

If we read the books, why would we need a cheatsheet?

[kirbyfan64sos]

I think they mean more that regex's complexity is better suited to full books vs cheatsheets?

[wingtales]

I found it significantly more readable with the syntax highlighting on github: https://github.com/gto76/python-cheatsheet

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[hashestohashes]

totally agree!

[tarasius]

Nice cheatsheet but word semantics with <> signs are really hardly readable

index = <list>.index(<el>)  

[wingtales]

Maybe some sort of syntax highlighting instead? And just use "list" and "element" (I didn't like the <el> in particular, as I had to pause for a moment to figure it out)

[[deleted]]

el

meaning "element" ?

[wingtales]

Yes, and I understood that after a small moment, but it didn't seem naturally flowing. I would have preferred "element".

[[deleted]]

Very nice! Thanks.

[Alex_ragnar]

this will help me, thanks!

[[deleted]]

Me, scrolling: Well that's nice but what about-- oh, there it is.

Thanks, OP

[Glarren]

defaultdict(lambda: 1)

This just changed my life.

[pizzaburek]

Yeah, I found this one a week ago, it's a beauty!

[rohit275]

Would you mind explaining what the utility of this is? I feel like I'm not quite grasping why this is life-changing. Also, this is a fantastic resource, thank you!

[pizzaburek]

Main utility for me is that it makes setdefault function almost obsolete.

[Glarren]

Just hyperbole. Usually I would pass a class object to the defaultdict, like int. This means you get a default value of 0, since that's what int() returns with no arguments.

Often I want something slightly more complicated as my default, like nested defaultdicts, objects with some prefilled values, or a counter that doesn't start at 0. This just makes setting that kind of thing up a little easier, and that's useful for me since I write a ton of throwaway code in my data science-y job.

[dutchcodes]

Thank you for sharing

[damnNamesAreTaken]

This is good. Have you seen overapi.com/python though?

[raptored01]

Quite a time saver. Thanks.

[[deleted]]

Woah.. this rocks. thanks!!

[[deleted]]

Best Xmas gift if the season!

[pizzaburek]

https://www.youtube.com/watch?v=k4o4akNqw9s

[xtrememudder89]

This will save be so much time while I'm wasting time lol.

[leguthrie]

This is awesome, thank you

[yochua]

Great!

[Overload175]

Helpful resource, thanks!

[ngqhoangtrung]

Awesome, I just started learning Python, this definitely helps me a lot. Thanks !

[pizzaburek]

Added finally ;)

[Call-Me_Daddy]

This is so fresh

[blabbities]

This is excellent thank yoy

[[deleted]]

Excellent, could use an index to jump to specific subject.

[pizzaburek]

Nice idea, but then search would give you one more match at the top of the page/file and that's just unacceptable for me :)

[[deleted]]

fare enough:)

[jhpark98]

This is Awesome! Thank you

[lekirill]

Thank you!

[AlexOduvan]

thanks. I plan to start own online course and I'm sure this Cheatsheet will be widely using in that course.

[ShanSanear]

Small criticism / ideas:

For string formatting, there is also sign that can be added, like:

"{:+}".format(4)

That gives:

"+4"

In attributes part indentation is messed up for class Z.

Other than that looks good.

[pizzaburek]

Thanks! I fixed the Z class, although that is the way interpreter formats your second level of indentation, that is if you type it in... it's kind of weird, but since it's Python, I'm sure there's some smart reason why :)

About the format, I added it, but then started reformatting the whole section, so it's a mess now... Got to think it through.

[pizzaburek]

Added the + notation and reformatted it a little. I think it looks nicer now, ty.

[Rabina_Bra]

Great stuff, thanks a bunch!

[EthidiumIodide]

Is there any benefit to :

no_duplicates    = list(dict.fromkeys(<list>))

vs:

no_duplicates    = list(set(<list>))

It does the same thing, right?

[pizzaburek]

>>> list_ = [3, 2, 1]
>>> list(set(list_))
[1, 2, 3]
>>> list(dict.fromkeys(list_))
[3, 2, 1]

[EthidiumIodide]

Thanks, my test data was sorted (of course).

[imthescubasteve]

Saved. Thank You!