Method to clean-up/delete db

[martinberoiz]

Add a method that deletes self.dn and self.pn, or automatically delete when class is garbage collected?

[BrunoSanchez]

Do you have a draft for such thing?

[BrunoSanchez]

I think the main question is how to know when this is garbage collected? And besides, the user might in a certain case, keep the DB for later.

Probably we could work everything with tempfiles and offer a method to dump the database to a certain file for later storing.

from shutil import copyfile

...
def dump_db(self, filename='tinynpydb'):
    copyfile(self.dn, Path(filename).with_suffix(".dat"))
    copyfile(self.dp, Path(filename).with_suffix(".map"))

Also we could offer a flag to avoid cleaning the DB unintentionally. Leave it True as default

class NumPyDB(object):
    def __init__(self, database_name, mode="store", purgable=True):
        ...

[martinberoiz]

The method called on destruction is called __del__.

So we could have something like:

class NumPyDB(object):
    def __init__(self, database_name, mode="store", purgeable=True):
        ...

    def __del__(self)
        if purgeable:
           # delete all pickles, clean up

Alternative to purgeable could be persist=False. But we should keep track somehow of the files we "own" (the ones tinynpdb creates) to delete only those when NumPyDB is gc'ed.