Traceback (most recent call last):
  File "/usr/lib/python3.5/py_compile.py", line 125, in compile
    _optimize=optimize)
  File "<frozen importlib._bootstrap_external>", line 735, in source_to_code
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "/in/foo.py", line 20
    i=1\uff03\u5b9a\u4e49\u8ba1\u6b21\uff08\u5faa\u73af\uff09\u53d8\u91cf
                 ^
SyntaxError: invalid character in identifier

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.5/py_compile.py", line 129, in compile
    raise py_exc
py_compile.PyCompileError:   File "/in/foo.py", line 20
    i=1\uff03\u5b9a\u4e49\u8ba1\u6b21\uff08\u5faa\u73af\uff09\u53d8\u91cf
                 ^
SyntaxError: invalid character in identifier