我如何使用 python-redis 检查 redis 数据库中是否存在值

Question

这是我的Python代码：

def check(request):
    import redis
    R = redis.StrictRedis(host='127.0.0.1', port=6379, db=0)
    R.set("name","srk")
    r = R.HSET("name","srk")
    print(r)

它遇到错误并显示以下错误消息：

Internal Server Error: /get_user/
Traceback (most recent call last):
  File "/home/soubhagya/.local/share/virtualenvs/pipenv-r-zifbiy/lib/python3.5/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/soubhagya/.local/share/virtualenvs/pipenv-r-zifbiy/lib/python3.5/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/soubhagya/.local/share/virtualenvs/pipenv-r-zifbiy/lib/python3.5/site-packages/django/core/handlers/base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/soubhagya/Desktop/Dev/rango/backend/access/views.py", line 103, in get_user
    r = R.HSET("name","srk")
AttributeError: 'StrictRedis' object has no attribute 'HSET'

在 py-redis 中，如何检查 redis 数据库中是否存在某个值。原始查询会很有帮助。请查看我的代码。

Answer 1

StrictRedis没有任何HSET功能，但它确实具有hset在Redis Hashes中设置字段的功能。这就是您收到错误的原因。

要使用 redis-py 检查 Redis 中是否存在密钥，请使用r = R.exists("name")。