(self, reqs)
return conflicting, missing
Return 2 sets:
            - conflicting requirements: set of (installed, wanted) reqs tuples
            - missing requirements: set of reqs
Return 2 sets:
            - conflicting requirements: set of (installed, wanted) reqs tuples
            - missing requirements: set of reqs
Return 2 sets : - conflicting requirements : set of ( installed wanted ) reqs tuples - missing requirements : set of reqs
def check_requirements(self, reqs):
        # type: (Iterable[str]) -> Tuple[Set[Tuple[str, str]], Set[str]]
        """Return 2 sets:
            - conflicting requirements: set of (installed, wanted) reqs tuples
            - missing requirements: set of reqs
        """
        missing = set()
        conflicting = set()
        if reqs:
            ws = WorkingSet(self._lib_dirs)
            for req in reqs:
                try:
                    if ws.find(Requirement.parse(req)) is None:
                        missing.add(req)
                except VersionConflict as e:
                    conflicting.add((str(e.args[0].as_requirement()),
                                     str(e.args[1])))
        return conflicting, missing
def check_requirements ( self , reqs ) : # type: (Iterable[str]) -> Tuple[Set[Tuple[str, str]], Set[str]] missing = set ( ) conflicting = set ( ) if reqs : ws = WorkingSet ( self . _lib_dirs ) for req in reqs : try : if ws . find ( Requirement . parse ( req ) ) is None : missing . add ( req ) except VersionConflict as e : conflicting . add ( ( str ( e . args [ 0 ] . as_requirement ( ) ) , str ( e . args [ 1 ] ) ) ) return conflicting , missing