edddlZdZefdZy)NcDfd}tj|S)a6 Decorate func so it's only ever called the first time. This decorator can ensure that an expensive or non-idempotent function will not be expensive on subsequent calls and is idempotent. >>> func = once(lambda a: a+3) >>> func(3) 6 >>> func(9) 6 >>> func('12') 6 cNtds |i|_jS)Nalways_returns)hasattrr)argskwargsfuncs 7/usr/lib/python3/dist-packages/keyring/util/__init__.pywrapperzonce..wrappers,t-."&"7"7D """) functoolswraps)r r s` r oncers # !9??4  ))r c#DK|D] } |y#|$rYwxYww)zk yield the results of calling each element of callables, suppressing any indicated exceptions. N) callables exceptionscallables r suppress_exceptionsrs7  *    s     )r r Exceptionrrr r rs*0/8 r