python转换html到pdf Python3转换html到pdf的不同解决方案

import pdfkit
pdfkit.from_url('http://google.com', 'out.pdf')

Traceback (most recent call last):
 File "E:\Python34\lib\site-packages\pdfkit\configuration.py", line 21, in __init__
  with open(self.wkhtmltopdf) as f:
FileNotFoundError: [Errno 2] No such file or directory: b''
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
 File "<pyshell#2>", line 1, in <module>
  pdfkit.from_url('http://google.com', 'out.pdf')
 File "E:\Python34\lib\site-packages\pdfkit\api.py", line 22, in from_url
  c
 File "E:\Python34\lib\site-packages\pdfkit\pdfkit.py", line 38, in __init__
  self.configuration = (Configuration() if configuration is None
 File "E:\Python34\lib\site-packages\pdfkit\configuration.py", line 27, in __init__
  'https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf' % self.wkhtmltopdf)
OSError: No wkhtmltopdf executable found: "b''"
If this file exists please check that this process can read it. Otherwise please install wkhtmltopdf - https://github.com/JazzCore/python-pdfkit/wiki/Installing-wkhtmltopdf

wkhtmltopdf http://google.com a.pdf