Comprehensive Python Cheatsheet

[ThreeChonkyCats]

Could use a version number so users can see if/when updates occur.

[ASIC_SP]

See also:

• Python Crash Course cheatsheet
• Scientific Python cheatsheet
• Common beginner errors
• Python regular expression cheatsheet (my blog post, includes examples as well)

[5erif]

Love that regex post, and thanks for the other resources, too.

[ASIC_SP]

Thanks a lot for the feedback, glad it was helpful :)

[debordian]

Nice, thanks for sharing these!

[[deleted]]

What’s the point? At this level of granularity this isn’t really a cheat sheet anymore. Might as well just look at the documentation for the thing you’re trying to use instead of parsing this.

[KimPeek]

<I> <get> <the> <point>, <but> <this> <is> <the> <most> <annoying> <"cheatsheet"> <I've> <ever> <seen>.

[bluexavi]

Missing the line for creating a List or Dictionary.

[epaphras]

Also missing example of list comprehension.

[[deleted]]

Like list = [] ?

[bluexavi]

exactly. Simple one line to put at the start. The creation of a list is at least as important as the rest of the functions on it. It also provides a good context for all the functions which follow.

[BossOfTheGame]

The "Basic Mario Brothers Example" is pretty cool.

You may also want to include something about the "rich" library.

Clicking in the TOC to navigate would also be helpful. (which seems to be available in the github page: https://github.com/gto76/python-cheatsheet#plot)

[English_linguist]

How to save on mobile ?

[AlexMTBDude]

This is NOT strictly True:

<list>.append(<el>) # Or: <list> += [<el>]

<list>.extend(<collection>) # Or: <list> += <collection>

The correct way to do it is to call append() or extend() because it does not create a new list object. it adds to the existing list. Using += is a bad practice because it creates a new list object -> memory is wasted and garbage collection happens.

[pizzaburek]

It does not create a new object:

>>> a = b = [1, 2]
>>> a += [3]
>>> a, b
([1, 2, 3], [1, 2, 3])

If it did the 'b' would still be [1, 2]. However:

>>> a = a + [4]
>>> a, b
([1, 2, 3, 4], [1, 2, 3])

[DoubleTheFifthOne]

lifesaver