如何使用 python 替换此 yaml 文件中的示例内容？

Question

- intent: magic

  examples: |
    - magic
    - Magick
    - jadu
    - magickkk

I want to replace "magic" with other any words. How can i do it? Please help.

Answer 1

There are some yml libraries that can help you like ruamel.yaml or pyyaml . I always used pyyaml but i found it a little bit triky to produce format you want. I managed to produce your format in output more easier with ruamel.yaml. However i think these library works in a similar way, you can use what you want. I tried this

from ruamel.yaml import YAML

yaml = YAML()
with open('file.yml') as file:
    data = yaml.load(file)
    print(data)
    data[0]['intent'] = "greetings"
    with open('file.yml', 'w') as out:
        yaml.dump(data, out)

The output will be

- intent: greetings
    examples: |
      - magic
      - Magick
      - jadu
      - magickkk

I don't understand why, but sometimes the output format is

- intent: greetings
    examples: |-
      - magic
      - Magick
      - jadu
      - magickkk

But i don't think that the "-" is a problem. In fact yml file is readed correctly.

Am i wrong or this is rasa nlu.yml file? :)