将 YAML 嵌套到 Python 中的嵌套字典

Question

I don't know how to get a nested dictionary from a nested YAML file.

YAML file looks like this :

device1:
    device_type: cisco_ios
    ip: s1 
    username: admin
    password: 123456
    secret: 123456
    port: 22

device2:
    device_type: cisco_ios
    ip: s2
    username: admin
    password: 123456
    secret: 123456
    port: 22

Dictionary should look like this:

net_devices = {
    'device_1': {
        'device_type': 'cisco_ios',
        'ip': 's1',
        'username': 'admin',
        'password': '123456',
        'secret': '123456',
        'port': 22,
    },
    'device_2': {
        'device_type': 'cisco_ios',       
        'ip': 's2',
        'username': 'admin',
        'password': '123456',
        'secret': '123456',
        'port': 22,
    }
}

How can I do this in Python?

Answer 1

Just install PyYAML https://pypi.org/project/PyYAML/

Then :

import yaml
yaml_as_python_dict = yaml.load(yaml_as_string_or_bytes)

https://pyyaml.org/wiki/PyYAML

Answer 2

Install ruamel.yaml from pypi

from ruamel.yaml import YAML
yaml = YAML(typ='safe')
with open('your_yaml_file.yaml') as fp:
    data = yaml.load(fp)

Contrary to the solution recommended by @glenfant:

• is safe with uncontrolled YAML input.
• it supports the latest YAML standard (version 1.2, published 2009)
• it is faster on most platforms (at least on macOS/Windows/Linux where wheels are available)

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_{Disclaimer: I am the author of ruamel.yaml}