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one liner (rsplit + maxsplit) solution in Clear category for Sort by Extension by CDG.Axel
from typing import List
def sort_by_ext(files: List[str]) -> List[str]:
"""
# clear solution
def srt(filename):
ne = filename.rsplit('.', maxsplit=1)
return ne[::-1] if ne[0] else ne
return sorted(files, key=srt)
"""
# alternative - all of this in one line
return sorted(files, key=lambda x: fn[::-1] if (fn := x.rsplit('.', maxsplit=1))[0] else fn)
if __name__ == '__main__':
print("Example:")
print(sort_by_ext(['1.cad', '1.bat', '1.aa']))
# These "asserts" are used for self-checking and not for an auto-testing
assert sort_by_ext(['1.cad', '1.bat', '1.aa']) == ['1.aa', '1.bat', '1.cad']
assert sort_by_ext(['1.cad', '1.bat', '1.aa', '2.bat']) == ['1.aa', '1.bat', '2.bat', '1.cad']
assert sort_by_ext(['1.cad', '1.bat', '1.aa', '.bat']) == ['.bat', '1.aa', '1.bat', '1.cad']
assert sort_by_ext(['1.cad', '1.bat', '.aa', '.bat']) == ['.aa', '.bat', '1.bat', '1.cad']
assert sort_by_ext(['1.cad', '1.', '1.aa']) == ['1.', '1.aa', '1.cad']
assert sort_by_ext(['1.cad', '1.bat', '1.aa', '1.aa.doc']) == ['1.aa', '1.bat', '1.cad', '1.aa.doc']
assert sort_by_ext(['1.cad', '1.bat', '1.aa', '.aa.doc']) == ['1.aa', '1.bat', '1.cad', '.aa.doc']
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Aug. 31, 2021
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