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A trivial, persistent, dictionary-like object, backed by SQLite.

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A trivial, persistent, dictionary-like object, backed by SQLite.


$ python install

Or just drop the file into your package.


Basic usage:

>>> from permadict import Permadict
>>> d = Permadict("db.sqlite")
>>> d["key"] = "value"
>>> print(d["key"])

As a context manager:

>>> with Permadict("db.sqlite") as d:
...     d["something"] = 1.2345
>>> with Permadict("db.sqlite") as d:
...     print(d["something"])


>>> d = Permadict("db.sqlite")
>>> for k, v in d.items():
...     print(k, v)
something 1.2345
>>> for key in d.keys():
...     print(key)

Deleting an item:

>>> del d["something"]

Clearing all items:

>>> d.clear()


Keys must be strings. Values are stored as BLOB type after being pickled, so your Python objects must be picklable.

Permadict doesn’t act entirely like a dict: some methods are missing, whether that be on purpose (as with dict.copy) or simply due to negligence.


I needed a way to share small amounts of data between processes. SQLite provides a safe way to do so. Also, why not?

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