scan.py

import boto3  # import Boto3


def scan_devices(display_devices_data, dynamodb=None):
    dynamodb = boto3.resource('dynamodb', endpoint_url="http://localhost:8000")
    # Specify the table to scan
    devices_table = dynamodb.Table('Smart_Farming1')
    done = False
    start_key = None
    while not done:
        if start_key:
            scan_kwargs['ExclusiveStartKey'] = start_key
        response = devices_table.scan()
        display_devices_data(response.get('Items', []))
        start_key = response.get('LastEvaluatedKey', None)
        done = start_key is None


if __name__ == '__main__':
    # A method for printing the items
    def print_devices(devices):
        for device in devices:
            print(f"\n{device['DeviceID']} : {device['DataCount']}")
            print(device['info'])

    print(f"Scanning all devices data")
    # Print the items returned
    scan_devices(print_devices)