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First solution in Clear category for Sort by Extension by juanmsmilla
from typing import List
def sort_by_ext(files: List[str]) -> List[str]:
# sort list by name
files = sorted(files)
# sort list by string after last "." ; empty if "." index >= 0
ordered = sorted(files, key=lambda file: file[(file.rfind(".") + 1 ):] if file.rfind(".") > 0 else "" )
return ordered
if __name__ == '__main__':
print("Example:")
print(sort_by_ext(['1.cad', '1.aa', '1.ba']))
# 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. 22, 2021
