* OS: osx/linux/win * Python version (output of `python --version`): * Environment (output of `pip freeze`): ### What is wrong? Please include information like: * full output of the error you received * what command you ran * the code that caused the failure (see [this link](https://help.github.com/articles/basic-writing-and-formatting-syntax/) for help with formatting code) ### How can it be fixed Fill this in if you know how to fix it.