[Python-modules-team] Bug#892162: python3-motor: Fails to import

[Salvo Tomaselli]

Package: python3-motor
Version: 1.2.1-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

I had just started the tutorial for this module 
http://motor.readthedocs.io/en/stable/tutorial-asyncio.html

and started with the initial import:

import motor.motor_asyncio

which fails.


In [2]: import motor.motor_asyncio
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-2-0f5fca46d7de> in <module>()
----> 1 import motor.motor_asyncio

/usr/lib/python3/dist-packages/motor/motor_asyncio.py in <module>()
     15 """Asyncio support for Motor, an asynchronous driver for MongoDB."""
     16 
---> 17 from . import core, motor_gridfs
     18 from .frameworks import asyncio as asyncio_framework
     19 from .metaprogramming import create_class_with_framework

/usr/lib/python3/dist-packages/motor/core.py in <module>()
     32 from pymongo.bulk import BulkOperationBuilder
     33 from pymongo.database import Database
---> 34 from pymongo.change_stream import ChangeStream
     35 from pymongo.collection import Collection
     36 from pymongo.cursor import Cursor, _QUERY_OPTIONS

ModuleNotFoundError: No module named 'pymongo.change_stream'

So as it is, this module is completely useless.

I suppose it depends on a different version of pymongo than
what is currently in the archive…

Best.

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to it_IT.UTF-8), LANGUAGE=it (charmap=UTF-8) (ignored: LC_ALL set to it_IT.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages python3-motor depends on:
ii  python3          3.6.4-1
ii  python3-gridfs   3.5.1+dfsg1-1
ii  python3-pymongo  3.5.1+dfsg1-1

python3-motor recommends no packages.

Versions of packages python3-motor suggests:
ii  python3-aiohttp  3.0.1-1
pn  python3-tornado  <none>

-- no debconf information