import yaml
yml = yaml.safe_load('''
name: Tom
age: 51
languages:
- l: python
start: 2005
s: 12000
- a: c
start: 1999
l: 15000
''')
print(yml['name'])
print(yml['age']) == 30
print(len(yml["languages"]))
print(yml["languages"][0]["l"])
print(yml["languages"][1]["l"])
'''
run:
Tom
51
2
python
c
'''