Created
June 17, 2020 09:41
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DynamoDB Example
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from __future__ import print_function # Python 2/3 compatibility | |
import boto3 | |
import json | |
import decimal | |
from boto3.dynamodb.conditions import Key, Attr | |
from botocore.exceptions import ClientError | |
# Helper class to convert a DynamoDB item to JSON. | |
class DecimalEncoder(json.JSONEncoder): | |
def default(self, o): | |
if isinstance(o, decimal.Decimal): | |
if o % 1 > 0: | |
return float(o) | |
else: | |
return int(o) | |
return super(DecimalEncoder, self).default(o) | |
dynamodb = boto3.resource("dynamodb", region_name='us-west-2', endpoint_url="http://localhost:8000") | |
table = dynamodb.Table('Movies') | |
title = "The Big New Movie" | |
year = 2015 | |
try: | |
response = table.get_item( | |
Key={ | |
'year': year, | |
'title': title | |
} | |
) | |
except ClientError as e: | |
print(e.response['Error']['Message']) | |
else: | |
item = response['Item'] | |
print("GetItem succeeded:") | |
print(json.dumps(item, indent=4, cls=DecimalEncoder)) |
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