The Python 2.7 `thread` module has been renamed to `_thread` in
Python3. This package was importing the `_thread` anyway, and was thus
fallbacking to the `dummy_thread32` module everytime, which is far from
failproof (eg. `lru_cache` decorator used in a WSGI app started on uWSGI
with threads enabled and high concurrency raises exceptions).
This fix loads the `thread` module accordingly, without trying to load
Python3 `_thread` module since setup.py prevents installation on Python 3 explicitly.
This package targets Python 2.7 only, as documented
ENDOH takanao