from schema import Field, Schema
myschema = Schema("mytable")
myschema.add_fields(["user", "range", "metric", "ccypair"])
myschema.add_fields({"date": int, "tradedate": int})
val_schema = Schema()
val_schema.add_fields(["orders", "trades"], float)
myschema.add_array("vals", object, val_schema, always_unwind=True)
print myschema
# Representation of a schema similar to the one depicted below:
#
# {
# user: str,
# range: str,
# metric: str,
# values: [
# {
# orders: int,
# trades: int
# }
# ]
# }
