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Nice, but why does this needs JS to be rendered ?
There are several items that are dubious at best. Why would you use no_duplicates = list(dict.fromkeys( )) instead of no_duplicates = list(set( )) ?
>>> list(dict.fromkeys([3, 2, 1])) [3, 2, 1] >>> list(set([3, 2, 1])) [1, 2, 3]
There are several items that are dubious at best. Why would you use no_duplicates = list(dict.fromkeys( )) instead of no_duplicates = list(set( )) ?
>>> list(dict.fromkeys([3, 2, 1])) [3, 2, 1] >>> list(set([3, 2, 1])) [1, 2, 3]
There are several items that are dubious at best. Why would you use no_duplicates = list(dict.fromkeys( )) instead of no_duplicates = list(set( )) ?
>>> list(dict.fromkeys([3, 2, 1])) [3, 2, 1] >>> list(set([3, 2, 1])) [1, 2, 3]
[1] https://docs.python.org/2/tutorial/datastructures.html#dicti...
There are several items that are dubious at best. Why would you use no_duplicates = list(dict.fromkeys( )) instead of no_duplicates = list(set( )) ?
Earlier quoted context omitted.
>>> list(dict.fromkeys([3, 2, 1])) [3, 2, 1] >>> list(set([3, 2, 1])) [1, 2, 3]
I'm not sure what you're trying to imply. If it's regarding the order, you're wrong. The keys returned by either `keys()` or by `__iter__` are returned in arbitrary order [1]. [1] https://docs.python.org/2/tutorial/datastructures.html#dicti...
Performing list(d) on a dictionary returns a list of all the keys used in the dictionary, in
insertion order ...Earlier quoted context omitted.
>>> list(dict.fromkeys([3, 2, 1])) [3, 2, 1] >>> list(set([3, 2, 1])) [1, 2, 3]
Neither dict nor set preserve order. This is a misleading snippet.
Earlier quoted context omitted.
>>> list(dict.fromkeys([3, 2, 1])) [3, 2, 1] >>> list(set([3, 2, 1])) [1, 2, 3]
I think this behavior will only be working starting from Python 3.6, as the dictionary obtained by calling `dict.fromkeys()` before this would not keep the ordering [1] [1] https://youtu.be/p33CVV29OG8?t=489
There are several items that are dubious at best. Why would you use no_duplicates = list(dict.fromkeys( )) instead of no_duplicates = list(set( )) ?
Earlier quoted context omitted.
I think this behavior will only be working starting from Python 3.6, as the dictionary obtained by calling `dict.fromkeys()` before this would not keep the ordering [1] [1] https://youtu.be/p33CVV29OG8?t=489
I love that talk. Raymond Hettinger is a gem. What I took from that is the implementation does preserve order but it isn't guaranteed yet and in theory it could change.
This talk is definitely worth a watch yes :)
> What I took from that is the implementation does preserve order but it isn't guaranteed yet and in theory it could change.
This was the case for python 3.6, but starting from Python 3.7 ordering is guaranteed [1]:
Changed in version 3.7: Dictionary order is guaranteed to be insertion order.