I tested installing python3 using the instructions at
https://passingcuriosity.com/2015/installing-python-from-source/ and
sure enough I received the same Traceback.
Setting up python3.5-minimal (3.5.3-1) ...
Traceback (most recent call last):
File "/usr/lib/python3.5/py_compile.py", line 6, in <module>
import importlib._bootstrap_external
File "/usr/lib/python3.5/importlib/__init__.py", line 57, in <module>
import types
File "/usr/lib/python3.5/types.py", line 166, in <module>
import functools as _functools
File "/usr/lib/python3.5/functools.py", line 23, in <module>
from weakref import WeakKeyDictionary
File "/usr/lib/python3.5/weakref.py", line 12, in <module>
from _weakref import (
ImportError: cannot import name '_remove_dead_weakref'
dpkg: error processing package python3.5-minimal (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of python3-minimal:
python3-minimal depends on python3.5-minimal (>= 3.5.3-1~); however:
Package python3.5-minimal is not configured yet.
dpkg: error processing package python3-minimal (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup
error from a previous failure.
Errors were encountered while processing:
python3.5-minimal
python3-minimal
Once I removed /usr/local/bin/python3.5 I was then able to fix the
upgrade via 'sudo apt-get -f install'.
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https://bugs.launchpad.net/bugs/1682934
Title:
package python3 3.5.1-4 failed to install/upgrade: pre-dependency
problem - not installing python3
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