Since Odoo no longer officially supports python 2, some of the
restrictions previously imposed by test_pylint are no longer necessary,
either because the usage of some builtin functions is legal (zip, map,
filter) or because the concerned function/module would already raise a
relevant error under python 3.
From time to time, it happens that a developper forget to remove debuggers.
This commit adds a test to find such imports (pdb and pudb). The test
will fail if that kind of import is found. The Odoo runbot should run
this test and prevent developper from those small mistakes.
P2 and P3 subprocess stdout seem to have very odd/different behaviours
in the face of mixing select and buffering.
Use raw/low-level IO (os.read) with select to try and fix that
up. Also read more than one byte at a time since os.read will not
block *if* the fd is readable, it will just get whatever data is
immediately available.
Now that we're closer to switching to P3 for good, these helpers have
outlived their usefulness, and mostly add noise.
All remaining dict.iter*() or dict.view*() must be converted to the
normal keys(), values() or items() calls.
Whenever the result is likely to be used for more than the scope of a
loop, or when the dict needs to be modified during iteration, the calls
must be wrapped in a ``list()``, to protect the new P3 semantics.
Those cases are very exceptional.
Also removed some dead code or improved the API to remove unnecessary
conversions.
* StringIO removed from stdlib, replace with io
* try to correctly handle BytesIO/StringIO (one is for bytes the other
is for text)
* fix base64: Python 3 removed bytes-encoding and bytes-bytes
codecs (via #encode) so replace all calls to str.encode('base64'),
also b64encode is a bytes->bytes conversion so attempt to properly
handle that
issue #8530
This will avoid useless warning when the file does not exists and
possible false positive errors in case of invalid config in this file.
Also strip output
In Python 2, to raise a new exception but reuse a traceback requires a
special form of ``raise`` (``raise etype, evalue, tb``).
In Python 3, this is now done via a ``with_traceback`` method on
exception objects.
However this requires a bit of trickery as the former is invalid
syntax in Python 3, hence pycompat bridge created via an exec for
Python 2.
* cross-version metaclass spec
* more formally deprecate browse_record and browse_null since they
were using metaclasses anyway
* update docstrings referencing the latter
In Python 3:
* various builtins and dict methods were changed to return
view/iterable objects rather than lists
* and the separate Python 2 view/iterable builtins and methods were
removed altogether
This is problematic when using these items as list (which the happens
repeatedly in Odoo), but more viciously when iterating *multiple times*
over them (which also happens, which I've messed up multiple times while
writing this, and which is a pain to debug even when you've just created
the issue).
Convert all code using these to semantics-matching cross-version
helper functions to get the LCD behaviour between P2 and P3, and
forbid the builtins via lint.
issue #8530
Adrian Torres