yaml_validation.py

import voluptuous
import yaml


schema = voluptuous.Schema({
    voluptuous.Required("name"): str,
    "sex": voluptuous.Any("Male", "Female", "N/A"),
    "class": str,
    "title": str,
    "hp": [int],
    "sp": [int],
    "gold": int,
    "inventory": [str],
    })

instance = yaml.load("""
name: Vorlin Laruknuzum
sex: Male
class: Priest
title: Acolyte
hp: [32, 71]
sp: [1, 13]
gold: 423
inventory:
- a Holy Book of Prayers (Words of Wisdom)
- an Azure Potion of Cure Light Wounds
- a Silver Wand of Wonder
""")


# calling the validation function
# this function will return instance if it's valid
# and will raise a MulitpleInvalid exception otherwise
assert schema(instance) == instance

# more info at https://github.com/alecthomas/voluptuous