Schema & config

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Usage example

from xlea import Schema, Column, config

# Simple schema — single header row (default)
class Person(Schema):
    id: int   = Column("ID")
    name: str = Column("Name")

# Schema with two header rows and a custom delimiter
@config(header_rows=2, delimiter=" > ")
class Report(Schema):
    revenue: float = Column("Finance > Revenue")
    units: int     = Column("Sales > Units Sold")