Python 3.12 removes imp module

[odie5533]

Future relies on the imp module in standard_library, used for things like from future.standard_library import hooks. In Python 3.12, the module has been completely removed. Future needs to switch to use importlib.

# future/standard_library/__init__.py
        name = bits[0]
        module_info = imp.find_module(name, path)
        return imp.load_module(name, *module_info)

    from future.standard_library import hooks
  File "/home/odie5533/test/venv/lib/python3.12/site-packages/future/standard_library/__init__.py", line 65, in <module>
    import imp
ModuleNotFoundError: No module named 'imp'

Workaround

If your code is like this

# Python 2 and 3: alternative 2
from future.standard_library import hooks

with hooks():
    from urllib.parse import urlparse, urlencode
    from urllib.request import urlopen, Request
    from urllib.error import HTTPError

You can rewrite it using the try-except form in the Cheat Sheet.

# Python 2 and 3: alternative 4
try:
    from urllib.parse import urlparse, urlencode
    from urllib.request import urlopen, Request
    from urllib.error import HTTPError
except ImportError:
    from urlparse import urlparse
    from urllib import urlencode
    from urllib2 import urlopen, Request, HTTPError

[odie5533]

Tried my hand at a PR but I can't dip into another codebase right now and I'm unsure of the state of some of the tests.

[amotl]

Thank you for submitting GH-626. We are also running into this over at mqttwarn.

• Add support for Python 3.12 mqtt-tools/mqttwarn#685