Comment 12 for bug 1445764

> /usr/local/src/mailman-bundler/venv-3.4/lib/python3.4 is a directory!

Sorry, that should have been

/usr/local/src/mailman-bundler/venv-3.4/bin/python3.4

but the fact that I don't see _collections_abc.py in the lib directory could be an issue unless it's in site-packages.

Here's what mine looks like.

$ ls -F mailman-bundler/venv-3.4/lib/python3.4
abc.py@ hmac.py@ rlcompleter.py@
base64.py@ importlib@ shutil.py@
bisect.py@ imp.py@ site-packages/
_bootlocale.py@ io.py@ site.py
codecs.py@ keyword.py@ sre_compile.py@
collections@ lib-dynload@ sre_constants.py@
_collections_abc.py@ linecache.py@ sre_parse.py@
config-3.4m-x86_64-linux-gnu@ locale.py@ stat.py@
copy.py@ no-global-site-packages.txt struct.py@
copyreg.py@ ntpath.py@ tarfile.py@
distutils/ operator.py@ tempfile.py@
_dummy_thread.py@ orig-prefix.txt tokenize.py@
encodings@ os.py@ token.py@
fnmatch.py@ plat-x86_64-linux-gnu@ types.py@
functools.py@ posixpath.py@ warnings.py@
__future__.py@ __pycache__/ weakref.py@
genericpath.py@ random.py@ _weakrefset.py@
hashlib.py@ reprlib.py@
heapq.py@ re.py@

The ones with '@' are all symlinks to the corresponding /usr/lib/python3.4/ file.