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I'm trying to use the gets and cas methods from pylibmc(v1.5.2) to interact with the memcached server. As documented, we should pass the cas token from gets to cas. 

token = mc.gets("key_python_1")
mc.cas("key_python_1", "value_python_1_new", token)

# Or
mc.cas("key_python_1", "value_python_1_new", mc.gets("key_python_1"))

However, I got a ValueError: gets without cas behavior err which is hard to understand.

Could someone shed some light on this issue? Any working example will be appreciated. Thanks ;)

--- Update ---

This is how I get mc.

import pylibmc

mc = pylibmc.Client(["127.0.0.1"], binary=True, behaviors={"tcp_nodelay": True, "ketama": True})
hackjutsu
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1 Answers1

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To fix this, you just need to add "cas": True to the list of behaviors.

import pylibmc

mc = pylibmc.Client(["127.0.0.1"], binary=True, behaviors={"cas": True, "tcp_nodelay": True, "ketama": True})
AllenT
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