filter(["1.3", "1.5a1"])) ['1.3'] >>> list(SpecifierSet("").filter(["1.5a1"])) ['1.5a1'] >>> list(SpecifierSet("", prereleases=True).filter(["1.3", "1.5a1"])) ['1.3', '1.5a1'] >>> list(SpecifierSet("").filter(["1.3", "1.5a1"], prereleases=True)) ['1.3', '1.5a1'] rū