ó  ‰\c@s€ddlmZddlZddlZddlZddlZdddgZddd„Zed„ƒZ ed „ƒZ dS( i’’’’(tcontextmanagerNt all_warningstexpected_warningstwarnicCs?|dk r(tj|d|d|ƒntj|d|ƒdS(sAA version of `warnings.warn` with a default stacklevel of 2. tcategoryt stacklevelN(tNonetwarningsR(tmessageRR((s8lib/python2.7/site-packages/skimage/_shared/_warnings.pyR s ccsŃtjƒ}|r@x+tj|ƒD]}i|djd>> import warnings >>> def foo(): ... warnings.warn(RuntimeWarning("bar")) We raise the warning once, while the warning filter is set to "once". Hereafter, the warning is invisible, even with custom filters: >>> with warnings.catch_warnings(): ... warnings.simplefilter('once') ... foo() We can now run ``foo()`` without a warning being raised: >>> from numpy.testing import assert_warns >>> foo() To catch the warning, we call in the help of ``all_warnings``: >>> with all_warnings(): ... assert_warns(RuntimeWarning, foo) it__warningregistry__s six.movestrecordtalwaysN(tinspectt currentframetgetouterframestf_localstlisttsystmodulestitemsR tcleartAttributeErrorRtcatch_warningstTruet simplefilter(tframetftmod_nametmodtw((s8lib/python2.7/site-packages/skimage/_shared/_warnings.pyRs& "   c csKt|tƒrtdƒ‚ntƒ}|Vxd|krN|jdƒq2Wg|D]!}d|jdƒkrV|^qV}x|D]…}t}xT|D]L}tj |t|j ƒƒdk r—t }||krć|j|ƒqćq—q—W|s„tdt|j ƒƒ‚q„q„Wt |ƒdkrAddj |ƒ}t|ƒ‚nWdQXdS( sŒContext for use in testing to catch known warnings matching regexes Parameters ---------- matching : list of strings or compiled regexes Regexes for the desired warning to catch Examples -------- >>> from skimage import data, img_as_ubyte, img_as_float >>> with expected_warnings(['precision loss']): ... d = img_as_ubyte(img_as_float(data.coins())) Notes ----- Uses `all_warnings` to ensure all warnings are raised. Upon exiting, it checks the recorded warnings for the desired matching pattern(s). Raises a ValueError if any match was not found or an unexpected warning was raised. Allows for three types of behaviors: `and`, `or`, and `optional` matches. This is done to accomodate different build enviroments or loop conditions that may produce different warnings. The behaviors can be combined. If you pass multiple patterns, you get an orderless `and`, where all of the warnings must be raised. If you use the `|` operator in a pattern, you can catch one of several warnings. Finally, you can use `|\A\Z` in a pattern to signify it as optional. sA``matching`` should be a list of strings and not a string itself.s\A\Zt|sUnexpected warning: %sisNo warning raised matching: %ss N(t isinstancetstrt ValueErrorRRtremovetsplittFalsetretsearchRRtlentjoin(tmatchingRtmt remainingRtfoundtmatchtmsg((s8lib/python2.7/site-packages/skimage/_shared/_warnings.pyRLs&  .  !  ( t contextlibRRRR R%t__all__RRRR(((s8lib/python2.7/site-packages/skimage/_shared/_warnings.pyts     9