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Re:Comprehensive Python Cheatsheet (2018) by pizzaburek on Monday February 04, 2019 @07:42AM (#19075826)
The whole cheatsheet is clearly in Python 3, where the same doc page that you linked states:

   Performing list(d) on a dictionary returns a list of all the keys used in the dictionary, in 
   insertion order ...
Re:Comprehensive Python Cheatsheet (2018) by detaro on Monday February 04, 2019 @08:08AM (#19075993)
only specified as such since Python 3.7, which hadn't been released when this cheat sheet was written, at least if the date at the top is accurate.

EDIT: clicking through to GitHub, the date is clearly not up-to-date, so this might have been added later.