从 TinyDB 数据库中获取所有的密钥

Question

我创建了一个 tinydb 数据库，如下所示：

{"_default": 
    {"1": {"word": "cat", "definition": "Its an animal."}, 
     "2": {"word": "cat", "definition": "Its an animal."}, 
     "3": {"word": "man", "definition": "has a hand"}, 
     "4": {"word": "girl", "definition": "Its a kid"}, 
     "5": {"word": "superman", "definition": "A hero."}
    }
}

我想检索字段 "word" 的每个值。这怎么可能？

Answer 1

您可以检索所有行，然后解析以获取 set 中的不同 word 字段，例如

all_rows = db.all()

all_words = {row['word'] for row in all_rows}     # set comprehension
all_words = set(map(lambda x: x['home'], values)) # map operation

从 TinyDB 数据库中获取所有的密钥

Get all the keys from TinyDB database

python

tinydb