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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def dependency_state(widgets, drop_defaults=True):
 """Get the state of all widgets specified, and their dependencies. This uses a simple dependency finder, including: - any widget directly referenced in the state of an included widget - any widget in a list/tuple attribute in the state of an included widget - any widget in a dict attribute in the state of an included widget - any jslink/jsdlink between two included widgets What this alogrithm does not do: - Find widget references in nested list/dict structures - Find widget references in other types of attributes Note that this searches the state of the widgets for references, so if a widget reference is not included in the serialized state, it won't be considered as a dependency. Parameters widgets: single widget or list of widgets. This function will return the state of every widget mentioned and of all their dependencies. drop_defaults: boolean Whether to drop default values from the widget states. Returns ------- A dictionary with the state of the widgets and any widget they depend on. """

    # collect the state of all relevant widgets
    if widgets is None:
        # Get state of all widgets, no smart resolution needed.
        state = Widget.get_manager_state(drop_defaults=drop_defaults, widgets=None)['state']
    else:
        try:
            widgets[0]
        except (IndexError, TypeError):
            widgets = [widgets]
        state = {}
        for widget in widgets:
            _get_recursive_state(widget, state, drop_defaults)
        # Add any links between included widgets:
        add_resolved_links(state, drop_defaults)
    return state