ModuleNotFoundError: No module named cStringIO · Issue #18 ...
github.com › vinta › haulNov 22, 2017 · ModuleNotFoundError: No module named 'cStringIO' m-spangenberg commented on Dec 6, 2018 I just stumbled across the same issue - it seems to be changes since in Python 3 removing StringIO and cStringIO modules and replacing them with io.StringIO and io.BytesIO. @vinta - haul/utils.py needs some small changes to reflect the removal of cStringIO.