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DataStax Python Driver for Apache Cassandra User Mailing List

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The Python driver has been donated to the Apache Software Foundation (ASF). The repo is now located at https://github.com/apache/cassandra-python-driver. Issues should be filed at the ASF JIRA, specifically https://issues.apache.org/jira/browse/CASSPYTHON.

All support is now handled through #cassandra-drivers on ASF Slack (https://the-asf.slack.com/). Please use that channel for all communication going forward, including support requests, feature requests and general discussion. Messages to this list may occasionally receive a reply but there is no guarantee of a response of any kind.

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12/2/25

Consumer can connect, but fails to read

Please ignore this message, I accidentally wrote it to the wrong list. Best, Glenn On 12/2/25 10:58,

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Consumer can connect, but fails to read

Please ignore this message, I accidentally wrote it to the wrong list. Best, Glenn On 12/2/25 10:58,

12/2/25

Glenn Glazer, Bret McGuire4

12/2/25

Incorrect error message

Apologies, in the port paragraph, 'This would eliminate the "' should be 'This would

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Incorrect error message

Apologies, in the port paragraph, 'This would eliminate the "' should be 'This would

12/2/25

10/22/25

[Release] DataStax Python Driver 3.29.3 for Apache Cassandra

Greetings! Today we've released Python Driver 3.29.3 for Apache Cassandra! This release is

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[Release] DataStax Python Driver 3.29.3 for Apache Cassandra

Greetings! Today we've released Python Driver 3.29.3 for Apache Cassandra! This release is

10/22/25

10/6/25

An update on the 3.30.0 (and 3.29.3) releases

Greetings all! We're continuing to work on the big-ticket items slated for 3.30.0, most notably

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An update on the 3.30.0 (and 3.29.3) releases

Greetings all! We're continuing to work on the big-ticket items slated for 3.30.0, most notably

10/6/25

5/8/25

Any new functionality relate to Cassandra 5?

Hi, I am trying to adapt new features SAI from Cassandra 5 in my project, but I find it impossible to

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Any new functionality relate to Cassandra 5?

Hi, I am trying to adapt new features SAI from Cassandra 5 in my project, but I find it impossible to

5/8/25

10/21/24

Python 3.12 support in the Python driver

Greetings all! I wanted to throw this message out as a clarification around our current support for

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Python 3.12 support in the Python driver

Greetings all! I wanted to throw this message out as a clarification around our current support for

10/21/24

9/11/24

[Release] DataStax Python Driver 3.29.2 for Apache Cassandra

Greetins! A quick follow up to my earlier announcement of the 3.29.2 release; our docs team has

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[Release] DataStax Python Driver 3.29.2 for Apache Cassandra

Greetins! A quick follow up to my earlier announcement of the 3.29.2 release; our docs team has

9/11/24

Michael Fischer, … Bret McGuire7

8/27/24

Size increase of wheels since 3.27

Excellent question Jody! I'll try to answer by providing a general update. While working on 3.29.

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Size increase of wheels since 3.27

Excellent question Jody! I'll try to answer by providing a general update. While working on 3.29.

8/27/24

Daniel Santos, … Alexandre Paulo dos Santos4

7/29/24

Inserting an empty value in a map column

Hi! A little late but, have you guys any update about that issue? I'm getting the same problem in

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Inserting an empty value in a map column

Hi! A little late but, have you guys any update about that issue? I'm getting the same problem in

7/29/24

Bret McGuire, Federico Fissore2

7/25/24

An update on the planned 3.30.0 release

Thx and keep up the good work!

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An update on the planned 3.30.0 release

Thx and keep up the good work!

7/25/24

Pankaja Shankar, Bret McGuire2

7/24/24

How to overcome the error on Windows while using cassandra-driver

Hey Pankaja, thanks for the question! It looks very much like you're encountering the problem

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How to overcome the error on Windows while using cassandra-driver

Hey Pankaja, thanks for the question! It looks very much like you're encountering the problem

7/24/24

7/16/24

[DISCUSS] Request for feedback re: new large features to (potentially) be added to the Apache Cassandra drivers still maintained by DataStax

Originally posted to (user && dev)@cassandra.apache.org, cross-posting here since folks here

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[DISCUSS] Request for feedback re: new large features to (potentially) be added to the Apache Cassandra drivers still maintained by DataStax

Originally posted to (user && dev)@cassandra.apache.org, cross-posting here since folks here

7/16/24

Bret McGuire, Federico Fissore2

3/25/24

[Release] DataStax Python Driver 3.29.1 for Apache Cassandra

We are finally in production running python 3.12, thank you very much! federico On Wed, 20 Mar 2024

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[Release] DataStax Python Driver 3.29.1 for Apache Cassandra

We are finally in production running python 3.12, thank you very much! federico On Wed, 20 Mar 2024

3/25/24

2/21/24

Plans for a 3.30.0 release

Greetings all! We've started putting together an outline for the next release which we'll

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Plans for a 3.30.0 release

Greetings all! We've started putting together an outline for the next release which we'll

2/21/24

12/22/23

[Release] DataStax Python Driver 3.29.0 for Apache Cassandra

Greetings! Just a quick follow-up to our announcement of the release of version 3.29.0. Wheels for

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[Release] DataStax Python Driver 3.29.0 for Apache Cassandra

Greetings! Just a quick follow-up to our announcement of the release of version 3.29.0. Wheels for

12/22/23

DataStax Python Driver for Apache Cassandra User Mailing List

9/19/23

[Release] DataStax Python Driver 3.28.0 for Apache Cassandra

Greetings! Python Driver 3.28.0 for Apache Cassandra was released in early June of 2023 but

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[Release] DataStax Python Driver 3.28.0 for Apache Cassandra

Greetings! Python Driver 3.28.0 for Apache Cassandra was released in early June of 2023 but

9/19/23

Bret McGuire, … Federico Fissore9

7/17/23

Plans for a 3.26.0 release.... and more!

Returning to the question posed by Ron above: I believe I can offer some additional information here.

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Plans for a 3.26.0 release.... and more!

Returning to the question posed by Ron above: I believe I can offer some additional information here.

7/17/23

Bret McGuire, … Federico Fissore5

5/3/23

[Release] DataStax Python Driver 3.27.0 for Apache Cassandra

Awesome thx! My apple colleagues will be happy cheers federico On Wed, 3 May 2023 at 16:51, Bret

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[Release] DataStax Python Driver 3.27.0 for Apache Cassandra

Awesome thx! My apple colleagues will be happy cheers federico On Wed, 3 May 2023 at 16:51, Bret

5/3/23

3/28/23

[Release] DataStax Python Driver 3.26.0 for Apache Cassandra

Greetings! Today we've released Python Driver 3.26.0 for Apache Cassandra! As discussed in an

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[Release] DataStax Python Driver 3.26.0 for Apache Cassandra

Greetings! Today we've released Python Driver 3.26.0 for Apache Cassandra! As discussed in an

3/28/23

Andrew Blum, Bret McGuire4

1/5/23

Providing ARM Python Wheel

Excellent, glad to hear it Andrew! - Bret - On Wednesday, January 4, 2023 at 7:07:36 PM UTC-6 Andrew

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Providing ARM Python Wheel

Excellent, glad to hear it Andrew! - Bret - On Wednesday, January 4, 2023 at 7:07:36 PM UTC-6 Andrew

1/5/23

Filip Kostecki, Bret McGuire2

9/7/22

Insert consistency level quorum docs error

Wow, nice catch! That docstring has been around for some time. You are correct, that should read

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Insert consistency level quorum docs error

Wow, nice catch! That docstring has been around for some time. You are correct, that should read

9/7/22

7/15/22

Upcoming cassandra-driver release and removal of support for Python 2.7.x

Greetings all! It's been some time since our last release of the Python cassandra-driver package.

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Upcoming cassandra-driver release and removal of support for Python 2.7.x

Greetings all! It's been some time since our last release of the Python cassandra-driver package.

7/15/22

3/5/22

execute_concurrent and execution profiles

Hi, I'm trying to migrate my code to use execution profiles. My code uses execute_concurren()

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execute_concurrent and execution profiles

Hi, I'm trying to migrate my code to use execution profiles. My code uses execute_concurren()

3/5/22

12/30/21

Support for creating materialized views with Python Driver

Hello I am relatively new to Cassandra, and was having a hard time finding support for creating

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Support for creating materialized views with Python Driver

Hello I am relatively new to Cassandra, and was having a hard time finding support for creating

12/30/21

vartika singh, … Bret McGuire7

12/13/21

Cassandra Db queries not working inside child process

please find the stack trace Process _GProcess-1: Traceback (most recent call last): File "/usr/

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Cassandra Db queries not working inside child process

please find the stack trace Process _GProcess-1: Traceback (most recent call last): File "/usr/

12/13/21

Manpreet, Bret McGuire2

12/9/21

javax.net.ssl.SSLHandshakeException: The client supported protocol versions [TLSv1.3] are not accepted by server preferences [TLS12, SSL20Hello]

Greetings Manpreet! This error indicates that your client is trying to use TLS 1.3 to communicate

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javax.net.ssl.SSLHandshakeException: The client supported protocol versions [TLSv1.3] are not accepted by server preferences [TLS12, SSL20Hello]

Greetings Manpreet! This error indicates that your client is trying to use TLS 1.3 to communicate

12/9/21

Manpreet, … Bret McGuire4

12/6/21

Any Python driver that supports TLSv1.3

Thanks for your question Manpreet! I believe the Python driver already has all the bits necessary to

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Any Python driver that supports TLSv1.3

Thanks for your question Manpreet! I believe the Python driver already has all the bits necessary to

12/6/21

Chris F., Bret McGuire3

9/16/21

support for Python 3.9?

Thank you! It's the only package I use that's holding me up for 3.9. From: Bret McGuire <

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support for Python 3.9?

Thank you! It's the only package I use that's holding me up for 3.9. From: Bret McGuire <

9/16/21

Alan Boudreault

3/19/21

[Release] DataStax Python Driver 3.25.0 for Apache Cassandra

Hi, Today we've released Python Driver 3.25.0 for Apache Cassandra. This release mostly includes

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[Release] DataStax Python Driver 3.25.0 for Apache Cassandra

Hi, Today we've released Python Driver 3.25.0 for Apache Cassandra. This release mostly includes

3/19/21

1/29/21

Python3: cassandra.cluster.NoHostAvailable: (“Unable to connect to any servers using keyspace 'test'”, ['127.0.0.1']) when using execute_async future

Hi All, I am trying to fetch data from Cassandra from a specific table and trying to insert it into

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Python3: cassandra.cluster.NoHostAvailable: (“Unable to connect to any servers using keyspace 'test'”, ['127.0.0.1']) when using execute_async future

Hi All, I am trying to fetch data from Cassandra from a specific table and trying to insert it into

1/29/21

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