UnicodeDecodeError: 'ascii' codec can't decode byte ...

[fhchl]

Thanks for this nice tool.

I was getting the following error that was fixed by installing pdfminer.six instead of pdfminer.

multiprocessing.pool.RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/home/fmheu/miniconda/lib/python3.7/multiprocessing/pool.py", line 121, in worker
    result = (True, func(*args, **kwds))
  File "/home/fmheu/miniconda/lib/python3.7/multiprocessing/pool.py", line 44, in mapstar
    return list(map(*args))
  File "analyze_papers.py", line 157, in article_worker
    pdf_result, text, pdf_log = process_pdf(metadata)
  File "analyze_papers.py", line 116, in process_pdf
    original_page_count, pages = pdf_to_text_list(first_pdf)
  File "analyze_papers.py", line 36, in pdf_to_text_list
    pages = layout_scanner.get_pages(file_loc, images_folder=None)  # you can try os.path.abspath("output/imgs")
  File "/home/fmheu/git/citation_map/layout_scanner.py", line 214, in get_pages
    return with_pdf(pdf_doc, _parse_pages, pdf_pwd, *tuple([images_folder]))
  File "/home/fmheu/git/citation_map/layout_scanner.py", line 37, in with_pdf
    result = fn(doc, *args)
  File "/home/fmheu/git/citation_map/layout_scanner.py", line 204, in _parse_pages
    interpreter.process_page(page)
  File "/home/fmheu/miniconda/lib/python3.7/site-packages/pdfminer/pdfinterp.py", line 841, in process_page
    self.render_contents(page.resources, page.contents, ctm=ctm)
  File "/home/fmheu/miniconda/lib/python3.7/site-packages/pdfminer/pdfinterp.py", line 854, in render_contents
    self.execute(list_value(streams))
  File "/home/fmheu/miniconda/lib/python3.7/site-packages/pdfminer/pdfinterp.py", line 869, in execute
    name = keyword_name(obj).decode('ascii')
UnicodeDecodeError: 'ascii' codec can't decode byte 0xa0 in position 1: ordinal not in range(128)
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "analyze_papers.py", line 243, in <module>
    result = pool.map(list_worker, list(titles_dict.items()), chunksize=5)
  File "/home/fmheu/miniconda/lib/python3.7/multiprocessing/pool.py", line 268, in map
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/home/fmheu/miniconda/lib/python3.7/multiprocessing/pool.py", line 657, in get
    raise self._value
UnicodeDecodeError: 'ascii' codec can't decode byte 0xa0 in position 1: ordinal not in range(128)