
Traceback (most recent call last):

 "<string>", line 1, in <module>

 "/tmp/pip-build-y7e201wb/matplotlib/setup.py", line 167, in <module>
result = package.check()

 "/tmp/pip-build-y7e201wb/matplotlib/setupext.py", line 1246, in check
import pyparsing

 "/usr/local/lib/python3.4/site-packages/pyparsing.py", line 3478, in <module>
_escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])

 "/usr/local/lib/python3.4/site-packages/pyparsing.py", line 948, in setParseAction
self.parseAction = list(map(_trim_arity, list(fns)))

 "/usr/local/lib/python3.4/site-packages/pyparsing.py", line 808, in _trim_arity
this_line = extract_stack()[-1]

 "/usr/local/lib/python3.4/site-packages/pyparsing.py", line 793, in extract_stack
return [(frame_summary.filename, frame_summary.lineno)]
AttributeError: 'tuple' object has no attribute 'filename'
Traceback (most recent call last):


 "/Users/yuichi/Programs/online-judge-tools/main.py", line 151, in <module>

main()


 "/Users/yuichi/Programs/online-judge-tools/main.py", line 140, in main

download(args)


 "/Users/yuichi/Programs/online-judge-tools/main.py", line 34, in download

samples = problem.download(session=sess, **kwargs)


 "/Users/yuichi/Programs/online-judge-tools/onlinejudge/yukicoder.py", line 91, in download

return self.download_samples(session=session)


 "/Users/yuichi/Programs/online-judge-tools/onlinejudge/yukicoder.py", line 105, in download_samples

it = self._parse_sample_tag(pre)


 "/Users/yuichi/Programs/online-judge-tools/onlinejudge/yukicoder.py", line 138, in _parse_sample_tag

return utils.textfile(tag.string.lstrip()), pprv.string + ' ' + prv.string
AttributeError: 'NoneType' object has no attribute 'lstrip'
