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Practice
Python pattern
Schema validation
5 problems in this pattern, climbing easy → medium → hard. Pick wherever you're calibrated.
Medium
0 / 3 solved
Validate records against a type schema
Python
· ~13 min
NEW
Report how incoming records drift from the schema
Python
· ~18 min
NEW
Parse raw records into a frozen dataclass, reporting every error
Python
· ~20 min
NEW
Hard
0 / 2 solved
Validate value constraints on messy types
Python
· ~18 min
NEW
Write a check that catches a buggy dedupe transform
Python
· ~30 min
NEW