Python: refinement of filtering

[eavanvalkenburg]

Motivation and Context

further refinement of in memory filtering

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[moonbox3]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
connectors
in_memory.py	184	26	85%	69–70, 74, 78–81, 257, 269, 271, 312, 316, 320, 335, 352, 367, 414, 420, 427, 449–450, 453, 461–462, 467, 502
TOTAL	28150	4822	82%

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
3833	23 💤	0 ❌	0 🔥	1m 51s ⏱️