0-Ph>ddlZddlmZdZdZddZddZddZdS) N)versionc |dkr*tj|tj|kS|dkr*tj|tj|kS|dkr*tj|tj|kS|dkr*tj|tj|kSdS#t$rYdSwxYw)a) Check version string of an active module against a required version. If dev/prerelease tags result in TypeError for string-number comparison, it is assumed that the dependency is satisfied. Users on dev branches are responsible for keeping their own packages up to date. >>==&))HN7,C,CC C t^^>&))X^G-D-DD D s]]>&))X^G-D-DD D s]]>&))HN7,C,CC C5 tts"/C/C"/C/C CCc t||ddg}t|dt|ddS)z=, > or < to specify the exact requirement Returns ------- out : bool True if `name` is installed matching the optional version. pythonNFTrz[0-9]zInvalid version numberr)rrrrzInvalid version condition '') lowersysrr ImportErrorresearchstartr)namerr r%matchsymbs r is_installedr+$s $ zz||xRaR '--FF   55 t   '7++  ":   ' D,,,,.SD.S.S.S,,,%++--//*fgt444s? A  A c"ddlfd}|S)a@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. rNcNfd}|S)Nctr|i|Sddjd}|dz }t|dz)N"z" in "z " requires " )r+ __module__r$)argskwargsmsgr(objrs r func_wrappedz0require..decorator..func_wrappedfsqD'** -sD+F+++G#GGS^GGGG&=w==(C!#),,,r)wraps)r5r6 functoolsr(rs` r decoratorzrequire..decoratoresF    - - - - - -   -r)r8)r(rr9r8s`` @rrequirer:Ns>*        rc|t||sdSt||ddgS)a)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. Nrrr)r+rr)rrs r get_moduler<usD&  W - -t k[-C-CC-H-H-L,M N N NNr)N) r# packagingrr rrr+r:r<rrr?s ))))))0FFF '5'5'5'5T$$$$NOOOOOOr