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Edit: /opt/alt/python37/lib/python3.7/site-packages/jsons/serializers/default_list.py

from typing import Optional

from typish import get_args

from jsons import get_serializer
from jsons._common_impl import StateHolder
from jsons._dump_impl import dump

def default_list_serializer(
        obj: list,
        cls: type = None,
        *,
        strict: bool = False,
        fork_inst: Optional[type] = StateHolder,
        **kwargs) -> list:
    """
    Serialize the given ``obj`` to a list of serialized objects.
    :param obj: the list that is to be serialized.
    :param cls: the (subscripted) type of the list.
    :param strict: a bool to determine if the serializer should be strict
    (i.e. only dumping stuff that is known to ``cls``).
    :param fork_inst: if given, it uses this fork of ``JsonSerializable``.
    :param kwargs: any keyword arguments that may be given to the serialization
    process.
    :return: a list of which all elements are serialized.
    """
    if not obj:
        return []

kwargs_ = {**kwargs, 'strict': strict}

# The meta kwarg store_cls is filtered out, because an iterable should have
    # its own -meta attribute.
    kwargs_.pop('_store_cls', None)

inner_type = None
    serializer = dump

cls_args = get_args(cls)
    if cls_args:
        inner_type = cls_args[0]
        serializer = get_serializer(inner_type, fork_inst)
    elif strict:
        inner_type = type(obj[0])
        serializer = get_serializer(inner_type, fork_inst)

return [serializer(elem, cls=inner_type, fork_inst=fork_inst, **kwargs_) for elem in obj]

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