demo.py

import validictory
import yaml

data = yaml.load("""
- foo
- bar: [baz, null, 1.0, 2]
""")

with open('schema.yml', 'r') as inp:
  schema = yaml.load(inp.read())

validictory.validate(data,schema)

schema.yml

items:
- type: string
- properties:
    bar:
      items:
      - type: string
      - type: any
      - type: number
      - type: integer
  type: object
type: array