使用 Python 设置 GitHub Action 输出

GitHub Action 的输出格式为将 {name}={value} 写到环境变量 GITHUB_OUTPUT^[1][2]，本文分享如何使用 Python 设置 GitHub Action 输出。主要内容来自于这篇讨论^[3]。

单行

import os
name = 'my_name'
value = 'my_value'
with open(os.environ['GITHUB_OUTPUT'], 'a') as fh:
    print(f'{name}={value}', file=fh)

多行

import uuid

def set_multiline_output(name, value):
    with open(os.environ['GITHUB_OUTPUT'], 'a') as fh:
        delimiter = uuid.uuid1()
        print(f'{name}<<{delimiter}', file=fh)
        print(value, file=fh)
        print(delimiter, file=fh)

只需要调用

set_multiline_output("value", my_multiline_string)

References

1. Workflow commands for GitHub Actions. Archived on 2024-09-06. Retrieved 2024-09-06. ↩
2. GitHub Actions: Deprecating save-state and set-output commands. Archived on 2024-09-06. Retrieved 2024-09-06. ↩
3. How to set-output from a python script in Github workflow step. #28146. Archived on 2024-09-06. Retrieved 2024-09-06. ↩