pip install pyyaml

# python3.6
{
"user": '测试',
"psw": 123456,
}

# yaml
user:测试
psw: 123456 

# python3.6
"nb1": {
 "user": "测试",
 "psw": "123456,
 }

# yaml
nb1:
 user: 测试
 psw: 123456

- admin1: 123456
- admin2: 111111
- admin3: 222222

[{'admin1': 123456},
{'admin2': 111111}, 
{'admin3': 222222}]

n1: 12.30 

{'n1': 12.3}

n2: true 
n3: false 

{'n2': True, 'n3': True}

n4: ~

{'n4': None}

time1: 2001-12-14t21:59:43.10-05:00 

{'time1': datetime.datetime(2001, 12, 15, 2, 59, 43, 100000)}

date1: 2017-07-31

{'date1': datetime.date(2017, 7, 31)}

# int转str
n6: !!str 123

{'n6': '123'}
# bool值转str
n7: !!str true

{'n7': 'true'}

n1: 12.30
n2: true
n3: false
n4: ~
time1: 2018-04-18t21:59:43.10+08:00
date1: 2018-04-18
n6: !!str 123
n7: !!str true

{'n1': 12.3, 
'n2': True, 
'n3': False, 
'n4': None, 
'time1': datetime.datetime(2018, 4, 18, 13, 59, 43, 100000), 
'date1': datetime.date(2018, 4, 18), 
'n6': '123', 
'n7': 'true'}

- user: admin1
 psw: '123456'

- user: admin2
 psw: '111111'

- user: admin3
 psw: '222222'

[{'user': 'admin1', 'psw': '123456'},
{'user': 'admin2', 'psw': '111111'},
{'user': 'admin3', 'psw': '222222'}]

nub1:
 - admin1
 - '123456'

nb2:
 - admin2
 - '111111'

nb3:
 - admin3
 - '222222'

{'nub1': ['admin1', '123456'],
'nb2': ['admin2', '111111'], 
'nb3': ['admin3', '222222']}