(cls, req_spec)
return ws
Build a working set from a requirement spec. Rewrites sys.path.
Build a working set from a requirement spec. Rewrites sys.path.
Build a working set from a requirement spec . Rewrites sys . path .
def _build_from_requirements(cls, req_spec):
        """
        Build a working set from a requirement spec. Rewrites sys.path.
        """
        # try it without defaults already on sys.path
        # by starting with an empty path
        ws = cls([])
        reqs = parse_requirements(req_spec)
        dists = ws.resolve(reqs, Environment())
        for dist in dists:
            ws.add(dist)

        # add any missing entries from sys.path
        for entry in sys.path:
            if entry not in ws.entries:
                ws.add_entry(entry)

        # then copy back to sys.path
        sys.path[:] = ws.entries
        return ws
def _build_from_requirements ( cls , req_spec ) : # try it without defaults already on sys.path # by starting with an empty path ws = cls ( [ ] ) reqs = parse_requirements ( req_spec ) dists = ws . resolve ( reqs , Environment ( ) ) for dist in dists : ws . add ( dist ) # add any missing entries from sys.path for entry in sys . path : if entry not in ws . entries : ws . add_entry ( entry ) # then copy back to sys.path sys . path [ : ] = ws . entries return ws