I watch an hour of yesterday's of yesterday's Microsoft Data Amp event. I saw the announcement that Python would be a part of SQL Server. That surprised me. I figured that if they were going to include any language it would be C#. But after thinking about it for a while I began to see the wisdom of that move. I love C#. I work in it every day. However, ignoring for the moment the OO nature of C#, it uses a procedural approach to software. I haven't any experience with Python, but I understand it to be more dynamic/functional in its approach. That's more in keeping with T-SQL anyway. So Python is a better fit for SQL Server than C# would have been, anyway.