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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 get_attachable_volumes(self, start=0, count=-1, filter='', query='', sort='', scope_uris='', connections=''):
 """ Gets the volumes that are connected on the specified networks based on the storage system port's expected network connectivity. A volume is attachable if it satisfies either of the following conditions: * The volume is shareable. * The volume not shareable and not attached. Args: start: The first item to return, using 0-based indexing. If not specified, the default is 0 - start with the first available item. count: The number of resources to return. A count of -1 requests all items. The actual number of items in the response might differ from the requested count if the sum of start and count exceeds the total number of items. filter (list or str):
 A general filter/query string to narrow the list of items returned. The default is no filter; all resources are returned. query: A general query string to narrow the list of resources returned. The default is no query; all resources are returned. sort: The sort order of the returned data set. By default, the sort order is based on create time with the oldest entry first. connections: A list of dicts specifics the connections used by the attachable volumes. Needs network uri, initiatoer name and optional proxy name scope_uris: A list specifics the list of scope uris used by the attachable volumed. Returns: list: A list of attachable volumes that the appliance manages. """

        uri = self.URI + '/attachable-volumes'
        if connections:
            uri += str('?' + 'connections=' + connections.__str__())
        return self._client.get_all(start, count, filter=filter, query=query, sort=sort, uri=uri, scope_uris=scope_uris)