Django错误xhtml2pdf

Question

我正在尝试使用名为django-xhtml2pdf的帮助程序生成带有xhtml2pdf的pdf，但是我收到有关库xhtml2pdf的错误。你能救我吗？

这是错误。感谢

SyntaxError at /

invalid syntax (util.py, line 302)

Request Method:     GET
Request URL:    http://localhost:8000/
Django Version:     1.7.7
Exception Type:     SyntaxError
Exception Value:    

invalid syntax (util.py, line 302)

Exception Location:     /usr/lib/python3.4/site-packages/xhtml2pdf/__init__.py in <module>, line 41
Python Executable:  /usr/bin/python
Python Version:     3.4.3
Python Path:    

['/home/ed/syscat',
 '/usr/lib/python34.zip',
 '/usr/lib/python3.4',
 '/usr/lib/python3.4/plat-linux',
 '/usr/lib/python3.4/lib-dynload',
 '/usr/lib/python3.4/site-packages']