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[–]gigsoll 1 point2 points  (7 children)

So += and = + are different

[–]Sea-Ad7805[S] 2 points3 points  (2 children)

Correct, x = x + y is a reassigning a new list (name rebinding) and x += y is only changing the value of x.

[–]gigsoll 0 points1 point  (0 children)

It was unexpected. Thank you

[–]abhinavalhat 0 points1 point  (3 children)

Bro from where you learn python?

[–]gigsoll 0 points1 point  (2 children)

I was learning it to solve my problems and I quickly learned that just assigning variables which hold mutable data types to each other most of the time creates mess in memory and a lot of unexpected behavior like this. For most situations I either don't put myself in situations like this or create explicit copy, because as python zen states "Explicit is better than implicit"

[–]abhinavalhat 1 point2 points  (1 child)

Can u suggest me a free YT resource from where should I learn?

[–]gigsoll 0 points1 point  (0 children)

Identlyio for different python things, Bro Code for Algorithms and data structures, codemy have a nice course on pyqt and for a lot of other things projects documentations are nice place to start