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  1. # your code goes here
  2. import re
  3.  
  4. print(re.sub(r'\b{4,}', '-', 'a-b-c-d-e'))
Runtime error #stdin #stdout #stderr 0.12s 23656KB
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Standard input is empty
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Standard output is empty
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Traceback (most recent call last):
  File "./prog.py", line 4, in <module>
  File "/usr/lib/python3.7/re.py", line 192, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "/usr/lib/python3.7/re.py", line 286, in _compile
    p = sre_compile.compile(pattern, flags)
  File "/usr/lib/python3.7/sre_compile.py", line 764, in compile
    p = sre_parse.parse(p, flags)
  File "/usr/lib/python3.7/sre_parse.py", line 930, in parse
    p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
  File "/usr/lib/python3.7/sre_parse.py", line 426, in _parse_sub
    not nested and not items))
  File "/usr/lib/python3.7/sre_parse.py", line 651, in _parse
    source.tell() - here + len(this))
re.error: nothing to repeat at position 2
https://ideone.com/jSNQZZ
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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