Expliclty inheriting from `object` was needed in Python 2 for
new-style classes, but is no longer needed in Python 3 where all
classes implicitly inherit from `object`.

Since Python 3.2 the standard subprocess modules restores the signal
handler to `SIG_DFL` by default.

Focus has been on trivial cases where it had minimal affect on the
code (i.e. `if len(X) > 0:` => `if x:` was sufficient).

The actual code did not mutate the kwargs, so it is not causing actual
trouble - just a lot of noise from linters.
Signed-off-by: NNiels Thykier <niels@thykier.net>

Signed-off-by: NNiels Thykier <niels@thykier.net>

Signed-off-by: NNiels Thykier <niels@thykier.net>

Signed-off-by: NNiels Thykier <niels@thykier.net>

The logger wants to prepend some values and expects a `list`.

ce54b4f1 missed changing the variable
name in one place.

This silences a warning from newer SQLAlchemy releases:

    SAWarning: Textual SQL expression '[...]' should be explicitly
    declared as text('[...]')

Primarily machine-readable files are no place for documentation.

This should prevent changes to the {src,bin}_contents tables and result
in all helper processes seeing the same data.

Rather than using try-finally blocks or even failing to close files in
the event of an exception, open files in with blocks where feasible.
Signed-off-by: NHelmut Grohne <helmut@subdivi.de>

Python changes the signal handler to SIG_IGN for a few signals which
causes unexpected behaviour in child processes. The wrapper functions in
the new daklib.daksubprocess module reset them to SIG_DFL in child
processes.

Reference: http://bugs.python.org/issue1652

Using with statements as done in c9f2c296
requires more resources, so revert back to using temporary tables.

We keep the statements to create and fill the temporary table separate from the
SELECT query itself which should fix the original problem in a different way.

SQLAlchemy might use server-side cursors and prepend a

  DECLARE "..." CURSOR WITHOUT HOLD FOR

to the statement.  This does not work if the statement starts with creating a
temporary table.

That works in Python >= 2.6.
Signed-off-by: NTorsten Werner <twerner@debian.org>

Signed-off-by: NTorsten Werner <twerner@debian.org>

Signed-off-by: NTorsten Werner <twerner@debian.org>