3.0.2

3.0.2.4

Improvements

  • The filter parameter of subscribe now supports lambda expressions as strings.

Bug Fixes

  • Fixed an issue in PROTOCOL_DDB where downloading a BOOL type column with more than 8,192 rows resulted in an error.

3.0.2.3

New Features

  • Added get_types_from_schema for extracting table schema information. Additionally, __DolphinDB_Type__ now accepts the str type for column types.

Bug Fixes

  • Fixed an issue where runTaskAsync would continuously make reconnection attempts instead of throwing an exception when executed by a guest user.

3.0.2.2

New Features

  • Added support for Python 3.12.

  • Introduced the Logger package, which allows logging information and print outputs to be directed to a specified location.

  • The MultithreadedTableWriter now includes a reconnect parameter, which controls automatic reconnection if the network connection is interrupted during writing.

Improvements

  • The resubTimeout parameter in subscribe has been renamed to resubscribeInterval.

Bug Fixes

  • Decimal data upload behavior has been standardized to rounding.
  • Fixed write performance degradation in the tableInsert and MultithreadedTableWriter, introduced in version 3.0.2.1.
  • Fixed an issue where nodes in high-availability mode failed to switch properly.

3.0.2.1

New Features

  • Added the io module with serialization and deserialization functions (dump, load, dumps, loads).

Improvements

  • Enhanced error message clarity.

Bug Fixes

  • When using the PROTOCOL_DDB protocol, the DolphinDB BLOB type is now correctly mapped to bytes in Python, instead of str.

3.0.2.0

Improvements

  • Enhanced parameter validation for methods such as Session.run.
  • Added tryReconnectNums parameter to Session.connect method and DBConnectionPool constructor to set reconnection attempts.
  • Added sqlStd parameter to Session and DBConnectionPool constructors to specify server-side SQL dialect.
  • Changed default protocol in Session and DBConnectionPool constructors from PROTOCOL_PICKLE to PROTOCOL_DDB.
  • When uploading a pandas.DataFrame, columns of string[pyarrow] type can now be specified as SYMBOL type.
  • Added new parameters readTimeout and writeTimeout to Session.connect to specify API read and write timeouts.