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    pyudev.core
    ===========

    Core types and functions of :mod:`pyudev`.

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    A device database connection.

    This class represents a connection to the udev device database, and is
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    This class itself gives access to various udev configuration data (e.g.
    :attr:`sys_path`, :attr:`device_path`), and provides device enumeration
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        This function creates and returns an :class:`Enumerator` object,
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    A filtered iterable of devices.

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    :meth:`match_property`.  Multiple subsystem (property) filters are
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    using a logical AND.  The following filter for instance::

        devices.match_subsystem('block').match_property(
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    means the following::

        subsystem == 'block' and (ID_TYPE == 'disk' or DEVTYPE == 'disk')

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        Include devices according to the rules defined by the keyword
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        - The value for the keyword argument ``subsystem`` is forwarded to
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        - The value for the keyword argument ``sys_name`` is forwared to
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        - The value for the keyword argument ``tag`` is forwared to
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        - The value for the keyword argument ``parent`` is forwared to
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        - All other keyword arguments are forwareded one by one to
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        All keyword arguments are optional, calling this method without no
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        Include all devices, whose ``attribute`` has the given ``value``.

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        Include only devices, which are initialized.

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        Include all devices on the subtree of the given ``parent`` device.

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