human
Complete the below
def drop_keyspace(name, connections=None):

    ''''Drops a keyspace, if it exists.
    *There are plans to guard schema-modifying functions with an environment-driven conditional.*
    **This function should be used with caution, especially in production environments.
    Take care to execute schema modifications in a single context (i.e. not concurrently with other clients).**
    :param str name: name of keyspace to drop
    :param list connections: List of connection names'
    '''

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Can you provide a the Python code you requested?
assistant
#Here is the Python code you requested.
    if (not _allow_schema_modification()):
        return
    if connections:
        if (not isinstance(connections, (list, tuple))):
            raise ValueError('Connections    must    be    a    list    or    a    tuple.')
    def _drop_keyspace(name, connection=None):
        cluster = get_cluster(connection)
        if (name in cluster.metadata.keyspaces):
            execute('DROP    KEYSPACE    {0}'.format(metadata.protect_name(name)), connection=connection)
    if connections:
        for connection in connections:
            _drop_keyspace(name, connection)
    else:
        _drop_keyspace(name)