pdf generation - Django error xhtml2pdf -

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i trying generate pdf xhtml2pdf using helper called django-xhtml2pdf getting error library xhtml2pdf. can me?

this error. thanks

syntaxerror @ /  invalid syntax (util.py, line 302)  request method:     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']


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