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Python 3 compatible library for DynamoDB

Project description

Dynamo3

Build:build coverage
Downloads:http://pypi.python.org/pypi/dynamo3
Source:https://github.com/stevearc/dynamo3

Dynamo3 is a library for querying DynamoDB. It is designed to be higher-level than boto (it’s built on top of botocore), to make simple operations easier to perform and understand.

Features

  • Mypy-typed API
  • Python object wrappers for most AWS data structures
  • Automatic serialization of built-in types, with hooks for custom types
  • Automatic paging of results
  • Automatic batching for batch_write_item
  • Exponential backoff of requests when throughput is exceeded
  • Throughput limits to self-throttle requests to a certain rate
  • Nose plugin for running DynamoDB Local

DynamoDB features that are not yet supported

  • Reading from streams
  • Adding/removing tags on a table
  • Table backups
  • Scanning with segments
  • Table replicas (Global tables version 2019.11.21)
  • Table auto scaling
  • DAX

Note that you can still access these APIs by using DynamoDBConnection.call, though you may prefer to go straight to boto3/botocore.

Changelog

1.0.0

  • Removed the legacy API (scan, query, update_item, delete_item, put_item, get_item)
  • Renamed the new API methods to match the old ones (e.g. scan2 -> scan, query2 -> query)
  • Moved constant values into dynamo3.constants. This is where you can now find STRING, BINARY, etc
  • Added mypy typing where possible
  • Drop support for Python 2
  • Add support for table billing mode (aka on-demand tables)
  • Add support for SSE, TTL, and transactions

0.4.10

  • Fixed DynamoDB Local link in testing framework

0.4.9

  • Feature: Result objects from get_item have an exists flag
  • Feature: wait keyword for create and delete table

0.4.8

  • Bug fix: Scans/Queries could return incomplete results if AWS returned an empty Items list

0.4.7

  • New RateLimit class to avoid blowing through your provisioned throughput

0.4.6

  • New Limit class for more complex query limit behavior
  • Bug fix: Scan and Query with Select='COUNT' will page results properly

0.4.5

  • batch_get supports alias arg for ExpressionAttributeNames

0.4.4

  • Make connection stateless again. Puts consumed_capacity into response object and fixes mystery crash.

0.4.3

  • Bug fix: getting ConsumedCapacity doesn’t crash for BatchGetItem and BatchWriteItem
  • Feature: connection.default_return_capacity
  • Feature: hooks for precall, postcall, and capacity
  • Better handling of ConsumedCapacity results

0.4.2

  • Feature: New methods to take advantage of the newer expression API. See get_item2, put_item2.
  • Feature: Shortcut use_version for switching over to the new APIs.

0.4.1

  • Feature: update_table can create and delete global indexes
  • Feature: New methods to take advantage of the newer expression API. See scan2, query2, update_item2, and delete_item2.

0.4.0

  • Migrating to botocore client API since services will be deprecated soon

0.3.2

  • Bug fix: Serialization of blobs broken with botocore 0.85.0

0.3.1

  • Bug fix: Crash when parsing description of table being deleted

0.3.0

  • Breakage: Dropping support for python 3.2 due to lack of botocore support
  • Feature: Support JSON document data types

Features thanks to DynamoDB upgrades: https://aws.amazon.com/blogs/aws/dynamodb-update-json-and-more/

0.2.2

  • Tweak: Nose plugin allows setting region when connecting to DynamoDB Local

0.2.1

  • Feature: New, unified connect method

0.2.0

  • Feature: More expressive ‘expected’ conditionals
  • Feature: Queries can filter on non-indexed fields
  • Feature: Filter constraints may be OR’d together

Features thanks to DynamoDB upgrades: http://aws.amazon.com/blogs/aws/improved-queries-and-updates-for-dynamodb/

0.1.3

  • Bug fix: sometimes crash after deleting table
  • Bug fix: DynamoDB Local nose plugin fails

0.1.2

  • Bug fix: serializing ints fails

0.1.1

  • Feature: Allow access_key and secret_key to be passed to the DynamoDBConnection.connect_to_* methods

0.1.0

  • First public release

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