safelib 0.6.1

An advanced library for safe importing and scoped imports management.

SafeLib - Import Everything Safe

Safelib is an importer that supports fallback mechanism.

0.6.0 Changelog

• Fixed several issues
• Added safelib.valid instead importer.valid
• Added search_builtins feature
• Extended exception handling

Example Usage

Using Context Manager (sync/async)

import safelib

from safelib import Import
with Import('sqlalchemy', 'peewee', raises=False, search_builtins=True) as orm:
    from safelib import declarative_base # use traditional import
    Base = orm.declarative_base # use orm to access the declarative_base

    # declarative_base can be found entity or safelib.NotFound
    # because we set raises=False, it will not raise an exception if the entity is not found

    # when we search for `int` with orm.int, it will search first in the builtins module
    # and return the int type if found, or safelib.NotFound if not found.

    # to validate whether an entity is valid, use:
    if safelib.valid(orm.entity):
        do_something_with(orm.entity)

Using Classical Imports

from safelib import _main, typing, _fallback, typing_extensions

from safelib import Protocol, _no_raise

#> Protocol is safelib.NotFound, typing.Protocol or typing_extensions.Protocol

from safelib import _no_raise # catch errors by defaulting missing entities

No-Raise Statement

Import _no_raise sentinel to catch exceptions in current state.

from safelib import _main, typing
from safelib import _no_raise, Protocool
# Protocool is safelib.NotFound, otherwise raises exception

import safelib

with safelib.Import(raises=False) as foo:
    # use context manager of Import with raises=False
    # or call safelib.catch() before context manager
    pass

Reset Statement

Import _reset sentinel to reset current state of safelib.

from safelib import _main, httpx
# after get method returned, state will be restored to initial state
from safelib import get, _reset 

from safelib import Import

async with Import('sqlalchemy', 'peewee') as importer:
    SafeEntity = importer.SafeEntity
    importer.reset_state()

For inquiries, feature request and bug reports, please contact me at [e-mail]