(620/620) checking keys in keyring                 [#######] 100%
(620/620) checking package integrity               [#######] 100%
(620/620) loading package files                    [#######] 100%
(620/620) checking for file conflicts              [#######] 100%
error: failed to commit transaction (conflicting files)
python-pytz: /usr/lib/python3.6/site-packages/pytz/__init__.py ex
ists in filesystem
python-pytz: /usr/lib/python3.6/site-packages/pytz/__pycache__/__
init__.cpython-36.pyc exists in filesystem
python-pytz: /usr/lib/python3.6/site-packages/pytz/__pycache__/ex
ceptions.cpython-36.pyc exists in filesystem
python-pytz: /usr/lib/python3.6/site-packages/pytz/__pycache__/la
zy.cpython-36.pyc exists in filesystem

[...]

python-pytz: /usr/lib/python3.6/site-packages/pytz/zoneinfo/posixrules exists in filesystem
python-pytz: /usr/lib/python3.6/site-packages/pytz/zoneinfo/zone.tab exists in filesystem
python-pytz: /usr/lib/python3.6/site-packages/pytz/zoneinfo/zone1970.tab exists in filesystem
Errors occurred, no packages were upgraded.