Version Information

Please provide:

• The version of Python you're using
  Python 3.7.3

• The version of pip you used to install github3.py
  conda 4.8.2. I used conda-forge to install github3.py

• The version of github3.py, requests, uritemplate, and dateutil installed
  github3.py 1.3.0 py_0 conda-forge
  requests 2.22.0 py37_1
  uritemplate.py 3.0.2 py_1 conda-forge
  didn't install dateutil

Minimum Reproducible Example

Please provide an example of the code that generates the error you're seeing.

repo = gh.repository('pytoolz', 'toolz') 
events = repo.issue_events() 
events = list(events)

I am trying to get all issue events for a repo. But I got TypeError, I think it's because some json records don't have all the fields. In this case, it doesn’t have user[‘avatar_url’].