Add python3.10 support

[john-dupuy]

Address #15

This is mostly just to fix https://github.com/google/earthengine-api for python3.10

@xmedeko @halvards can one of you take a look?

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[kcaylor]

Any update on this? Would be nice to get this approved and merged into the distribution...

[john-dupuy]

Any update on this? Would be nice to get this approved and merged into the distribution...

No updates from my end, perhaps @halvards can take a look? I'm not sure who else has write access to this repo.
If this library is deprecated, it might be better to remove earthengine-api's dependence on it.

[kcaylor]

@john-dupuy - I found a work-around. It turns out that ee.Initialize() allows passing in an http_transport argument that bypasses the problematic code in the httplib2shim library. So this works:

import httplib2
ee.Initialize(http_transport=httplib2.Http())

Whatever the httplib2shim code was doing, it seems that httplib2 works fine (so far). Agree this library should be removed from ee if possible.

[john-dupuy]

@kcaylor thanks for the tip! Unfortunately, our project relies on the ee-cli tool, which uses the ee client that gets initialized here:
https://github.com/google/earthengine-api/blob/master/python/ee/cli/utils.py#L133-L139

However, maybe we can rework things to use the ee client directly rather than the cli tool.