fusepy | Simple ctypes bindings for FUSE

by fusepy Python Version: Current License: ISC

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Simple ctypes bindings for FUSE

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Community Discussions

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Python get file path from a file descriptor int (as returned from os.open)

Django REST: Exception Value: .filter_queryset() must be overridden

QUESTION

Python get file path from a file descriptor int (as returned from os.open)

Asked 2019-Oct-03 at 12:58

I am using fusepy and I need to convert a file descriptor back in to a file object so that I can obtain the original file path

From the fusepy examples, when a file is created, a file descriptor is returned - for example:

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ANSWER

Answered 2019-Oct-03 at 12:58

Since this seems to satisfy the need, I'll post it as an answer for the time being. One could access underlying objects through f.buffer and f.buffer.raw (not the surprise mentioned in question depends a bit on Python version used, in v2 this looked different), but that still won't help accessing the filename used top open the file. Note: this could have just as well taken place in a calling process and a descriptor could have been inherited by the python process.

Not sure if there is a nicer and more portable way, but one can query OS and on U*X like system a readily available way would be to reference procfs structure, namely for the above example:

Source https://stackoverflow.com/questions/58218363

QUESTION

Django REST: Exception Value: .filter_queryset() must be overridden

Asked 2018-Oct-04 at 06:43

I tried to create a new installation of my codebase and am running into this issue. As best as possible, I have tried to verify that both installations have the same exact versions of all dependencies.

The issue only seems to strike on endpoints that access the database, although maybe that is just a coincidence and the issue is not at all DB related. (The DB is definitely functioning because the old install can still access it.)

Let me know if there is any other helpful info I can gather to help debug.

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ANSWER

Answered 2018-Oct-04 at 06:43

In your settings, you've set DEFAULT_FILTER_BACKENDS' to ('rest_framework.filters.BaseFilterBackend',). Thus, BaseFilterBackend is being applied to most your views* and is throwing the NotImplementedError because BaseFilterBackend is a baseclass that is not actually intended to be applied directly -- only to be overridden by you or inherited by other filters. You should remove it from your defaults and anywhere else you're using it.

*Except the ones that manually specify their filters via filter_backends like you did in your sample view.

For example, the error can be resolved by replacing BaseFilterBackend with DjangoFilterBackend in the settings and in the view.

Source https://stackoverflow.com/questions/52560898

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