U ܦ—\bã@s ddlZdd„Zefdd„ZdS)éNcs‡fdd„}t ˆ¡|ƒS)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 cstˆdƒsˆ||Žˆ_ˆjS)NÚalways_returns)Úhasattrr)ÚargsÚkwargs©Úfunc©ú7/usr/lib/python3/dist-packages/keyring/util/__init__.pyÚwrappers  zonce..wrapper)Ú functoolsÚwraps)rr rrr Úonces r c cs0|D]&}z |ƒVWq|k r(YqXqdS)zk yield the results of calling each element of callables, suppressing any indicated exceptions. Nr)Z callablesÚ exceptionsÚcallablerrr Úsuppress_exceptionss  r)r r Ú Exceptionrrrrr Ús