% pip3 install pyyaml

% cat yaml_test.py
import yaml

data = {'A': 'abc', 'B': {'C': 'c', 'D': 'd', 'E': 'e'}, 'W': ['x', 'y', 'z']}

with open('data.yml', 'w') as file:
    yaml.dump(data, file, default_flow_style=False)
    file.write("---\n")
    yaml.dump(data, file, default_flow_style=False)

#with open('data.yml') as f:
#    film = yaml.load(f, Loader=yaml.FullLoader)
#    print("KK1",film)

with open('data.yml') as f:
    films = yaml.load_all(f, Loader=yaml.FullLoader)
    for film in films:

% cat test2.py
import yaml

yaml_str = """
Date: 2017-03-10
PriceList:
    -
       item_id: 1000
       name: Banana
       color: yellow
       price: 800
    -
       item_id: 1001
       name: Orange
       color: orange
       price: 1400
    -
       item_id: 1002
       name: Apple
       color: red
       price: 2400
"""
#-´Â ¹è¿­À» ¶æÇÔ
data = yaml.load(yaml_str)

for item in data['PriceList']:
    print("id: ",item['item_id'],"name: ",item['name'],"color: ",item['color'],"price: ",item['price'])
        print("KK2",film)