Fetch CO2 emission information (#3182)

* Fetch CO2 emission information

* fix blank lines

* fix blank lines

* Add type hints for function return values

* Update co2_emission.py

* Update co2_emission.py

* Update co2_emission.py

Co-authored-by: Christian Clauss <cclauss@me.com>

Jr Miranda committed 5y ago

c425010c447f4bb3339829d55869781dcb390054

Parent: d02f6bb

Committed by GitHub <noreply@github.com> on 10/11/2020, 11:31:56 PM