File "/usr/lib/python3.6/fnmatch.py", line 36, in fnmatch
    return fnmatchcase(name, pat)
  File "/usr/lib/python3.6/fnmatch.py", line 70, in fnmatchcase
    match = _compile_pattern(pat)
  File "/usr/lib/python3.6/fnmatch.py", line 46, in _compile_pattern
    return re.compile(res).match
  File "/usr/lib/python3.6/re.py", line 233, in compile
    return _compile(pattern, flags)
  File "/usr/lib/python3.6/re.py", line 301, in _compile
    p = sre_compile.compile(pattern, flags)
  File "/usr/lib/python3.6/sre_compile.py", line 562, in compile
    p = sre_parse.parse(p, flags)
  File "/usr/lib/python3.6/sre_parse.py", line 855, in parse
    p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
  File "/usr/lib/python3.6/sre_parse.py", line 416, in _parse_sub
    not nested and not items))
  File "/usr/lib/python3.6/sre_parse.py", line 765, in _parse
    p = _parse_sub(source, state, sub_verbose, nested + 1)
  File "/usr/lib/python3.6/sre_parse.py", line 416, in _parse_sub
    not nested and not items))
  File "/usr/lib/python3.6/sre_parse.py", line 553, in _parse
    raise source.error(msg, len(this) + 1 + len(that))
sre_constants.error: bad character range b-a at position 56