First creative solution for Morse Clock by martin_b - python coding challenges

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First solution in Creative category for Morse Clock by martin_b

# migrated from python 2.7
def checkio(time_string):
    # neither very readable not optimal but does the work
    return "{:02b} {:04b} : {:03b} {:04b} : {:03b} {:04b}".format(*sum([[int(i)//10,int(i)%10] for i in time_string.split(":")],[])).replace("0",".").replace("1","-")
 
if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert checkio("10:37:49") == ".- .... : .-- .--- : -.. -..-", "First Test"
    assert checkio("21:34:56") == "-. ...- : .-- .-.. : -.- .--.", "Second Test"
    assert checkio("00:1:02") == ".. .... : ... ...- : ... ..-.", "Third Test"
    assert checkio("23:59:59") == "-. ..-- : -.- -..- : -.- -..-", "Fourth Test"

Dec. 3, 2015

Comments:

quesneljoseph on Oct. 15, 2017, 4:38 a.m.
hard for me to grasp the expression logic from it but at the same time i completely get what you did. didnt expect to see a one liner. you should split with ' \ ' if possible. it looks dirty but its a really nice example (to me) of comprehension that being said, how did you think to use sum here? I got my solution with a dictionary instead of using binary so im not entirely sure how to make sense of it

martin_b on Oct. 17, 2017, 8:26 p.m.
Thanks for the comment. The usage of sum is only a trick to flatten the list, i.e. <pre class='brush: python'>sum([[1,2],[3,4]],[]) </pre> returns <pre class='brush: python'>[1, 2, 3, 4] </pre>

Strings Theory

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