Traceback (most recent call last):
  File "/usr/lib/python3.6/py_compile.py", line 125, in compile
    _optimize=optimize)
  File "<frozen importlib._bootstrap_external>", line 741, in source_to_code
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/w/foo.py", line 2
    for b in range(2,a-1)
                        ^
SyntaxError: invalid syntax

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.6/py_compile.py", line 129, in compile
    raise py_exc
py_compile.PyCompileError:   File "/w/foo.py", line 2
    for b in range(2,a-1)
                        ^
SyntaxError: invalid syntax

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。