Persistent storage of attrs attributes or an ordered set (like a list, but no duplicates) to
a local SQLite database file.
from attr import attrib, attrs
from ismain import is_main
from pref import Pref, PrefOrderedSet
application_name = "myapp"
author = "me"
@attrs
class MyPref(Pref):
first_name: str = attrib(default=None)
last_name: str = attrib(default=None)
has_subscription: bool = attrib(default=False) # start off with no subscription
def get_pref() -> MyPref:
return MyPref(application_name, author)
def get_ordered_set() -> PrefOrderedSet:
return PrefOrderedSet(application_name, author, "mylist")
if is_main():
# set a variable
preferences = get_pref()
preferences.first_name = "James"
preferences.last_name = "Abel"
# read it back
preferences = get_pref()
print(preferences.first_name) # James
print(preferences.last_name) # Abel
print(preferences.has_subscription) # evaluates as False (is actually int of 0)
# set an ordered set (list-like, but no duplicates)
my_list = get_ordered_set()
my_list.set(["a", "b", "c"])
# read the ordered set back in
my_list = get_ordered_set()
print(my_list.get()) # ['a', 'b', 'c']