用Python写一个NoSQL数据库

(True, DATA[key])

def handle_putlist(key, value):

"""Return a tuple containing True if the command succeeded and the message

to send back to the client."""

return handle_put(key, value)

def handle_putlist(key, value):

"""Return a tuple containing True if the command succeeded and the message

to send back to the client"""

return handle_put(key, value)

def handle_getlist(key):

"""Return a tuple containing True if the key contained a list and the

message to send back to the client."""

return_value = exists, value = handle_get(key)

if not exists:

return return_value

elif not isinstance(value, list):

return (False, 'ERROR: Key [{}] contains non-list value ([{}])'.format(

key, value))

else:

return return_value

def handle_increment(key):

"""Return a tuple containing True if the key's value could be incremented

and

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