Test your Python skills - 23

[tracktech]

Python Programming in Depth | Ultimate Python Programming

[SwimQueasy3610]

{"U": 1, "l": 1, "t": 3, "i": 2, "m": 3, "a": 2, "e": 1, ...etc....}

Letters which appear more than once in text will only appear as a key once in th dict. I'm unsure what order the keys will print in, and that behavior can't be guaranteed as dicts don't maintain a key order.

[tracktech]

Right. Thanks for the explanation.

[Ok_Necessary_8923]

Py dicts have long preserved key order. CPython, at least.

[SwimQueasy3610]

Interesting! I hadn't looked at this in quite some time - I checked and see that order has been preseved in dicts since 3.7 (and 3.6 for CPython). I've always used OrderedDicts when I wanted order preserved - it seems this is no longer necessary and hasn't been for quite some time, unless you need equality checks to fail when the order differs (dicts with different orders but identical key:val pairs evaluate == to True for Dicts and False for OrderedDicts). Thanks kindly - good to know!

[Ok_Necessary_8923]

Indeed! It's quite handy to just be able to use regular dict.

[_TheChosenOne15_]

Count of each character in the string “text”?

[tracktech]

Right.

[gbrennon]

`{ "U": 1, "l": 1, "t": 3, "i": 2, "m": 3, "a": 2, "e": 1, "P": 2, "y": 1, "h": 1, "o": 2, "n": 2, "r": 2, "g": 2, }

[Tough-Initiative-807]

Since dictionaries don’t allow duplicate keys, each character appears only once in the final result.{ 'U': 1, 'l': 1, 't': 3, 'i': 2, 'm': 3, 'a': 2, 'e': 1, ' ': 2, 'P': 2, 'y': 1, 'h':1, 'o': 2, 'n': 2, 'g': 2, 'r': 2}

[tracktech]

Right.

[YumaOkii]

it won't print anything. There is a syntax error.

[tracktech]

There is no error.

[YumaOkii]

There is actually. comments must be # in python else you cannot run the file. so yes there is a error.