Source code for bag

"""bag library."""

from typing import Callable, Dict, Iterable
import pkg_resources
# Module version, as defined in PEP-0396.
__version__ = pkg_resources.get_distribution('bag').version
del pkg_resources


[docs]def first(iterable: Iterable): """Return the first object in ``iterable``, or None if empty.""" for o in iterable: return o
[docs]def dict_subset(adict: Dict, predicate: Callable): """Return a dict that is a subset of ``adict`` using a filter function. The signature of the filter is: ``predicate(key, val) -> bool`` """ return {k: v for k, v in adict.items() if predicate(k, v)}