如何將新鍵和值附加到 yaml 字典文件

Question

如何將一對新的鍵和值附加到 yaml 文件，而不刪除文件內容或將整個 yaml 重新添加到自身？

with open(r'D:\Programmi\Linguaggi\Python\testingyaml.yml','r+') as cocktails:
    buffer = yaml.safe_load(cocktails)
    buffer['one'] = 'two'
    yaml.dump(buffer,cocktails)

如果我這樣做，它會添加新的鍵和值，但它也會將整個 yaml 文件添加到自身

Answer 1

您需要創建另一個可寫緩沖區，可能是這樣的：

with open(r'D:\Programmi\Linguaggi\Python\testingyaml.yml', 'r+') as cocktails:
    buffer = yaml.safe_load(cocktails)
    buffer['one'] = 'two'

with open(r'D:\Programmi\Linguaggi\Python\testingyaml.yml', 'w') as cocktails:
    yaml.dump(buffer, cocktails)