python2.7.10 使用 pdfminer3k 远程 http 读取 pdf 文件报错，有什么读取 pdf 可用的方法吗？

Traceback (most recent call last):
File "D:/work/workspace/mywork/earthquake_crapy/document/pdf_example.py", line 2, in <module>
from pdfminer.pdfinterp import PDFResourceManager,process_pdf
File "D:\MyTools\Python-2.7.10\lib\site-packages\pdfminer\pdfinterp.py", line 5, in <module>
from .cmapdb import CMapDB, CMap
File "D:\MyTools\Python-2.7.10\lib\site-packages\pdfminer\cmapdb.py", line 23, in <module>
from .psparser import PSStackParser
File "D:\MyTools\Python-2.7.10\lib\site-packages\pdfminer\psparser.py", line 4, in <module>
from .utils import choplist
File "D:\MyTools\Python-2.7.10\lib\site-packages\pdfminer\utils.py", line 212, in <module>
0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff,
File "D:\MyTools\Python-2.7.10\lib\site-packages\pdfminer\utils.py", line 180, in <genexpr>
PDFDocEncoding = ''.join( chr(x) for x in (
ValueError: chr() arg not in range(256)