CFFI UserWarning: 'point_conversion_form_t' has no values explicitly defined;
Downgrading to cffi==1.2.1 ended up being the solution for me.
I'm getting the following warning when running a scrapy crawler:
C:\Users\dan\Anaconda2\envs\scrapy\lib\site-packages\cffi\model.py:526: UserWarning: 'point_conversion_form_t' has no values explicitly defined; next version will refuse to guess which integer type it is meant to be (unsigned/signed, int/long)
  % self._get_c_name())
I hadn't been getting this in my previous Anaconda Python install on my Windows 10. I had to reset my environment and now I am.
It's not preventing the crawler from running, but it's kind of annoying. Can anyone tell me what might be causing this?