Traceback (most recent call last):


 "C:\Anaconda3\lib\site-packages\pip\basecommand.py", line 215, in main

status = self.run(options, args)


 "C:\Anaconda3\lib\site-packages\pip\commands\install.py", line 335, in run

wb.build(autobuilding=True)


 "C:\Anaconda3\lib\site-packages\pip\wheel.py", line 749, in build

self.requirement_set.prepare_files(self.finder)


 "C:\Anaconda3\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files

ignore_dependencies=self.ignore_dependencies))


 "C:\Anaconda3\lib\site-packages\pip\req\req_set.py", line 666, in _prepare_file

check_dist_requires_python(dist)


 "C:\Anaconda3\lib\site-packages\pip\utils\packaging.py", line 48, in check_dist_requires_python

feed_parser.feed(metadata)


 "C:\Anaconda3\lib\email\feedparser.py", line 178, in feed

self._input.push(data)


 "C:\Anaconda3\lib\email\feedparser.py", line 104, in push

self._partial.write(data)
TypeError: string argument expected, got 'NoneType'

Traceback (most recent call last):


 "/usr/lib/python3.5/site-packages/byterun/byterun/pyvm2.py", line 236, in dispatch

why = bytecode_fn(*arguments)


 "/usr/lib/python3.5/site-packages/byterun/byterun/pyvm2.py", line 930, in byte_CALL_FUNCTION

return self.call_function(arg, [], {})


 "/usr/lib/python3.5/site-packages/byterun/byterun/pyvm2.py", line 971, in call_function

retval = func(*posargs, **namedargs)


 "/usr/lib/python3.5/site-packages/byterun/byterun/pyobj.py", line 72, in __call__

callargs = inspect.getcallargs(self._func, *args, **kwargs)


 "/usr/lib/python3.5/inspect.py", line 1284, in getcallargs

spec = getfullargspec(func)


 "/usr/lib/python3.5/inspect.py", line 1094, in getfullargspec

raise TypeError('unsupported callable') from ex
TypeError: unsupported callable
