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First solution in Clear category for Sort by Extension by Greenhornprofessional
from typing import List
def sort_by_ext(files: List[str]) -> List[str]:
def find_ext(text: str) -> tuple:
words = text.split('.')
if text[0] == '.' and len(words) < 3:
return (0, text)
elif text[-1] == '.':
return (0, text)
else:
return (1, words[-1])
return sorted(files, key=lambda i:(find_ext(i), i))
if __name__ == '__main__':
print("Example:")
print(sort_by_ext(["1.cad","2.bat","1.aa","1.bat"]))
# 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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Oct. 6, 2021
