Pyinstaller error ImportError: No module named 'requests.packages.chardet.sys

I don't have a solution for this yet, but this is caused by latest changes in requests module (versions 2.5.2 & 2.5.3).

For now you can use version 2.5.1 until PyInstaller will have suitable hook for solving this issue.

I cannot really explain the issue, but it looks like there's some kind of collision between PyInstaller import hooks and some latest additions to requests (VendorAlias).

Good news, this has been fixed in the latest version of requests

pip install requests --upgrade

Easy.