ó  ‰\c@snddlmZddlZddlZddlZd„Zd„Zdd„Zdd„Z dd„Z dS(i˙˙˙˙(t LooseVersionNcCsİy|dkr%t|ƒt|ƒkS|dkrGt|ƒt|ƒkS|dkrit|ƒt|ƒkS|dkr‹t|ƒt|ƒkStSWntk r¤tSXdS(s” Check version string of an active module against a required version. If dev/prerelease tags result in TypeError for string-number comparison, it is assumed that the dependency is satisfied. Users on dev branches are responsible for keeping their own packages up to date. Copyright (C) 2013 The IPython Development Team Distributed under the terms of the BSD License. t>s>=t=tt|d|jdƒdgƒ}t|dt|ddƒƒS(s<Return module version or None if version can't be retrieved.tfromlistt.i˙˙˙˙t __version__tVERSIONN(t __import__t rpartitiontgetattrtNone(t module_nametmod((sClib/python2.7/site-packages/skimage/_shared/version_requirements.pytget_module_version#s cCsà|jƒdkr"tjd }n%yt|ƒ}Wntk rFtSX|d krWtStj d|ƒ}|d k st dƒ‚||j ƒ }|s d}n|d ksĵt d |ƒ‚||j ƒ}t |||ƒSd S( s\Test if *name* is installed. Parameters ---------- name : str Name of module or "python" version : str, optional Version string to test against. If version is not None, checking version (must have an attribute named '__version__' or 'VERSION') Version may start with =, >=, > or < to specify the exact requirement Returns ------- out : bool True if `name` is installed matching the optional version. Notes ----- Original Copyright (C) 2009-2011 Pierre Raybaut Licensed under the terms of the MIT License. tpythonis[0-9]sInvalid version numberRs>=RRsInvalid version condition '%s'N(s>=RRR( tlowertsysRRt ImportErrorRRRtretsearchtAssertionErrortstartR (tnameRRtmatchtsymb((sClib/python2.7/site-packages/skimage/_shared/version_requirements.pyt is_installed*s"    cs‡‡fd†}|S(s@Return decorator that forces a requirement for a function or class. Parameters ---------- name : str Name of module or "python". version : str, optional Version string to test against. If version is not None, checking version (must have an attribute named '__version__' or 'VERSION') Version may start with =, >=, > or < to specify the exact requirement Returns ------- func : function A decorator that raises an ImportError if a function is run in the absence of the input dependency. cs(tjˆƒ‡‡‡fd†ƒ}|S(Ncsitˆˆƒrˆ||ŽSd}|ˆˆjˆf}ˆdk rU|dˆ7}nt|dƒ‚dS(Ns"%s" in "%s" requires "%ss %st"(R!t __module__RR(targstkwargstmsg(RtobjR(sClib/python2.7/site-packages/skimage/_shared/version_requirements.pyt func_wrappedjs  (t functoolstwraps(R'R((RR(R'sClib/python2.7/site-packages/skimage/_shared/version_requirements.pyt decoratoris$ ((RRR+((RRsClib/python2.7/site-packages/skimage/_shared/version_requirements.pytrequireVs cCs3t||ƒsdSt|d|jdƒdgƒS(s)Return a module object of name *module_name* if installed. Parameters ---------- module_name : str Name of module. version : str, optional Version string to test against. If version is not None, checking version (must have an attribute named '__version__' or 'VERSION') Version may start with =, >=, > or < to specify the exact requirement Returns ------- mod : module or None Module if *module_name* is installed matching the optional version or None otherwise. R R i˙˙˙˙N(R!RRR(RR((sClib/python2.7/site-packages/skimage/_shared/version_requirements.pyt get_modulexs ( tdistutils.versionRR)RRR RRR!R,R-(((sClib/python2.7/site-packages/skimage/_shared/version_requirements.pyts      , "