get_rng

async def get_rng(name: str, start: int, stop = None) -> List[dict] | List[str] | List[int]

stop is exclusive based.

Param	Description
name	Name of the array
start	Position of the first item to retrieve
stop	The last index, exclusive

Returns

The items requested.

Array Type Differences

None

Raises

• ResponseError if query fails
  • name does not exist
  • start out of bounds
• ValueError caught before query is sent
  • name is empty
  • start > stop

Examples

This is for illustration only, this is best achieved with min() and max().

client = NdbClient()
await client.open('ws://127.0.0.1:1987/')

sortedInts = SortedIntArrays(client)
await sortedInts.create('scores', 5)
await sortedInts.set_rng('scores', [50,102,95,64,22])

scores = await sortedInts.get_rng('scores', start=0)

print(f'Ascending: {scores}')
print(f'Descending: {scores[::-1]}')
print(f'High: {scores[-1]}, '
      f'Low: {scores[0]}, '
      f'Top Three: {scores[-1:-4:-1]}')


# get just the top three
scores = await sortedInts.get_rng('scores', start=2)
print(f'Top Three with get_rng(): {scores[::-1]}')

Ascending: [22, 50, 64, 95, 102]
Descending: [102, 95, 64, 50, 22]
High: 102, Low: 22, Top Three: [102, 95, 64]
Top Three with get_rng(): [102, 95, 64]