CHANGELOG.md

Neo4j Driver Change Log (breaking/major changes only)

See also https://github.com/neo4j/neo4j-python-driver/wiki for a full changelog.

NEXT RELEASE

• No breaking or major changes.

Version 5.17 - 5.20

• No breaking or major changes.

Version 5.16

• Implemented a hierarchical logger structure to improve log source identification and traceability.
  Introduced child loggers:
  • neo4j.io: For socket and bolt protocol related logging.
  • neo4j.pool: For logs pertaining to connection pooling and routing.
  • neo4j.auth_management: For logging inside the provided AuthManager implementations.

Version 5.15

• No breaking or major changes.

Version 5.14

• Python 3.12 support added

Version 5.13

• Deprecated using neo4j.Driver and neo4j.AsyncDriver after calling .close() on them, except for calling .close() again, which has no effects.

Version 5.10 - 5.12

• No breaking or major changes.

Version 5.9

• neo4j.auth_management.ExpiringAuth's expires_in (in preview) was replaced by expires_at, which is a unix timestamp.
  You can use ExpiringAuth(some_auth).expires_in(123) instead.

Version 5.8

• Renamed experimental neo4j.RoutingControl.READERS to READ and WRITERS to WRITE.
• Renamed experimental driver.query_bookmark_manager to execute_query_bookmark_manager.
• Query argument to experimental driver.execute_query not is typed LiteralString instead of str to help mitigate accidental Cypher injections. There are rare use-cases where a computed string is necessary. Please use # type: ignore, or typing.cast to suppress the type checking in those cases.

Version 5.7

• Deprecated importing from neo4j.work and its submodules. Everything should be imported directly from neo4j instead.

Version 5.5 - 5.6

• No breaking or major changes.

Version 5.4

• Undocumented helper methods Neo4jError.is_fatal_during_discovery and Neo4jError.invalidates_all_connections have been deprecated and will be removed without replacement in version 6.0.

Version 5.3

• Python 3.11 support added
• Removed undocumented, unused neo4j.data.map_type
• Query strings are now typed LiteralString instead of str to help mitigate accidental Cypher injections. There are rare use-cases where a computed string is necessary. Please use # type: ignore, or typing.cast to suppress the type checking in those cases.
• The experimental bookmark manager feature was changed to no longer track bookmarks per database.
  This effectively changes the signature of almost all bookmark manager related methods:
  • neo4j.BookmarkManger and neo4j.AsyncBookmarkManger abstract base classes:
    • update_bookmarks has no longer a database argument.
    • get_bookmarks has no longer a database argument.
    • The get_all_bookmarks method was removed.
    • The forget method was removed.
  • neo4j.GraphDatabase.bookmark_manager and neo4j.AsyncGraphDatabase.bookmark_manager factory methods:
    • initial_bookmarks is no longer a mapping from database name to bookmarks but plain bookmarks.
    • bookmarks_supplier no longer receives the database name as an argument.
    • bookmarks_consumer no longer receives the database name as an argument.

Version 5.1 - 5.2

• No breaking or major changes.

Version 5.0

• Python 3.10 support added
• Python 3.6 support has been dropped.
• Result, Session, and Transaction can no longer be imported from neo4j.work. They should've been imported from neo4j all along.
  Remark: It's recommended to import everything needed directly from noe4j if available, not its submodules or subpackages.
• Experimental pipelines feature has been removed.
• Async driver (i.e., support for asyncio) has been added.
• ResultSummary.server.version_info has been removed.
  Use ResultSummary.server.agent, ResultSummary.server.protocol_version, or call the dbms.components procedure instead.
• SSL configuration options have been changed:
  • trust has been deprecated and will be removed in a future release.
    Use trusted_certificates instead. See the API documentation for more details.
• neo4j.time module:
  • Duration
    • The constructor does not accept subseconds anymore.
      Use milliseconds, microseconds, or nanoseconds instead.
    • The property subseconds has been removed.
      Use nanoseconds instead.
    • The property hours_minutes_seconds has been removed.
      Use hours_minutes_seconds_nanoseconds instead.
    • For all math operations holds: they are element-wise on (months, days, nanoseconds). This affects (i.e., changes) the working of //, %, /, and *.
      • Years are equal to 12 months.
      • Weeks are equal to 7 days.
      • seconds, milliseconds, microseconds, and nanoseconds are implicitly converted to nanoseconds or seconds as fit.
    • Multiplication and division allow for floats but will always result in integer values (round to nearest even).
  • Time
    • The constructor does not accept floats for second anymore.
      Use nanosecond instead.
    • Ticks are now nanoseconds since midnight (int).
      • The property ticks_ns has been renamed to ticks.
        The old ticks is no longer supported.
      • The propertyfrom_ticks_ns has been renamed to from_ticks.
        The old from_ticks is no longer supported.
    • The property second returns an int instead of a float.
      Use nanosecond to get the sub-second information.
    • The property hour_minute_second has been removed.
      Use hour_minute_second_nanosecond instead.
  • DateTime
    • The property hour_minute_second has been removed.
      Use hour_minute_second_nanosecond instead.
    • The property second returns an int instead of a float.
      Use nanosecond to get the sub-second information.
• Creation of a driver with bolt[+s[sc]]:// scheme and a routing context has been deprecated and will raise an error in the Future. The routing context was and will be silently ignored until then.
• Bookmarks
  • Session.last_bookmark was deprecated. Its behaviour is partially incorrect and cannot be fixed without breaking its signature.
    Use Session.last_bookmarks instead.
  • neo4j.Bookmark was deprecated.
    Use neo4j.Bookmarks instead.
• Deprecated closing of driver and session objects in their destructor. This behaviour is non-deterministic as there is no guarantee that the destructor will ever be called. A ResourceWarning is emitted instead.
  Make sure to configure Python to output those warnings when developing your application locally (it does not by default).
• Result scope:
  • Records of Results cannot be accessed (peek, single, iter, ...) after their owning transaction has been closed, committed, or rolled back. Previously, this would yield undefined behavior. It now raises a ResultConsumedError.
  • Records of Results cannot be accessed (peek, single, iter, ...) after the Result has been consumed (Result.consume()). Previously, this would always yield no records. It now raises a ResultConsumedError.
  • New method Result.closed() can be used to check for this condition if necessary.
• The undocumented return value of driver.verify_connectivity() has been removed. If you need information about the remote server, use driver.get_server_info() instead.
• Transaction functions (a.k.a. managed transactions):
  The first argument of transaction functions is now a ManagedTransaction object. It behaves exactly like a regular Transaction object, except it does not offer the commit, rollback, close, and closed methods.
  Those methods would have caused a hard to interpreted error previously. Hence, they have been removed.
• Deprecated Nodes' and Relationships' id property (int) in favor of element_id (str).
  This also affects Graph objects as indexing graph.nodes[...] and graph.relationships[...] with integers has been deprecated in favor of indexing them with strings.
• ServerInfo.connection_id has been deprecated and will be removed in a future release. There is no replacement as this is considered internal information.
• Output of logging helper neo4j.debug.watch changes
  • ANSI colour codes for log output are now opt-in
  • Prepend log format with log-level (if colours are disabled)
  • Prepend log format with thread name and id
• Deprecated neo4j.exceptions.Neo4jError.is_retriable().
  Use neo4j.exceptions.Neo4jError.is_retryable() instead.
• Importing submodules from neo4j.time (neo4j.time.xyz) has been deprecated. Everything needed should be imported from neo4j.time directly.
• neo4j.spatial.hydrate_point and neo4j.spatial.dehydrate_point have been deprecated without replacement. They are internal functions.
• Importing neo4j.packstream has been deprecated. It's internal and should not be used by client code.
• Importing neo4j.routing has been deprecated. It's internal and should not be used by client code.
• Importing neo4j.config has been deprecated. It's internal and should not be used by client code.
• neoj4.Config, neoj4.PoolConfig, neoj4.SessionConfig, and neoj4.WorkspaceConfig have been deprecated without replacement. They are internal classes.
• Importing neo4j.meta has been deprecated. It's internal and should not be used by client code. ExperimantalWarning should be imported directly from neo4j. neo4j.meta.version is exposed through neo4j.__vesrion__
• Importing neo4j.data has been deprecated. It's internal and should not be used by client code. Record should be imported directly from neo4j instead. neo4j.data.DataHydrator and neo4j.data.DataDeydrator have been removed without replacement.
• Removed undocumented config options that had no effect: protocol_version and init_size.
• Introduced neo4j.exceptions.SessionError that is raised when trying to execute work on a closed or otherwise terminated session.
• Removed deprecated config options update_routing_table_timeout and session_connection_timeout.
  Server-side keep-alives communicated through configuration hints together with the config option connection_acquisition_timeout are sufficient to avoid the driver getting stuck.
• Deprecate Session.read_transaction and Session.write_transaction in favor of Session.execute_read and Session.execute_write respectively.

Version 4.4

• Python 3.5 support has been dropped.

Version 4.3

• Python 3.9 support added

Version 4.2

• No breaking or major changes.

Version 4.1

• Routing context is now forwarded to the server for when required by server-side routing

Version 4.0 - Breaking Changes

• The package version has jumped from 1.7 directly to 4.0, in order to bring the version in line with Neo4j itself.
• The package can now no longer be installed as neo4j-driver; use pip install neo4j instead.
• The neo4j.v1 subpackage is now no longer available; all imports should be taken from the neo4j package instead.
• Changed session(access_mode) from a positional to a keyword argument
• The bolt+routing scheme is now named neo4j
• Connections are now unencrypted by default; to reproduce former behaviour, add encrypted=True to Driver configuration
• Removed transaction.success flag usage pattern.

• Python 3.8 supported.
• Python 3.7 supported.
• Python 3.6 supported.
• Python 3.5 supported.
• Python 3.4 support has been dropped.
• Python 3.3 support has been dropped.
• Python 3.2 support has been dropped.
• Python 3.1 support has been dropped.
• Python 3.0 support has been dropped.
• Python 2.7 support has been dropped.