🔒 Is there a way to convert time from 12 hours to 24 hours format in a single expression?

[ebon igloo]

assuming only the hours are to be converted, is there a way to do it in 1 expression? the best I came up is with an if statement, two elif statements and then another else statement

[dense quiver]

@ebon igloo

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[swift abyss]

It's always possible to do something like that, but the result will likely be ugly and less readable.

I actually created this as a golfing challenge like 7 years ago: https://codegolf.stackexchange.com/questions/105858/12-hour-to-24-hour-time-converter

There's at least one Python answer.

[ebon igloo]

thought so, it isn't possible to do one that covers all of the edge cases

[obsidian cairn]

example inputs would be helpful

>>> datetime.strptime(input(), "%I %p").strftime("%H")
11 AM
'11'
>>> datetime.strptime(input(), "%I %p").strftime("%H")
5 PM
'17'

[ebon igloo]

can't use libraries, the input is the form "XX PM" or "XX AM"

did this and it worked time_in_hrs = int(time[:2]) % 12 + (12 if 'PM' in time else 0)

[swift abyss]

That's very close-looking to the existing Python 2 answer:

lambda s:`int(s[:2])%12+12*("p"in s)`+s[3:5]

[dense quiver]

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