Have python_*{,_host} handle arch-variants

Bug: 196081778
Test: TestPython*{,Host}ArchVariance
Test: go test
Test: mixed_{libc,droid}.sh
Change-Id: I89304e58f5bacd61534732bade4ad6bb5f2671c0
diff --git a/python/library.go b/python/library.go
index a132216..19fa59a 100644
--- a/python/library.go
+++ b/python/library.go
@@ -88,14 +88,11 @@
 		// do nothing, since python_version defaults to PY2ANDPY3
 	}
 
-	srcs := android.BazelLabelForModuleSrcExcludes(ctx, m.properties.Srcs, m.properties.Exclude_srcs)
-	data := android.BazelLabelForModuleSrc(ctx, m.properties.Data)
-	deps := android.BazelLabelForModuleDeps(ctx, m.properties.Libs)
-
+	baseAttrs := m.makeArchVariantBaseAttributes(ctx)
 	attrs := &bazelPythonLibraryAttributes{
-		Srcs:         bazel.MakeLabelListAttribute(srcs),
-		Data:         bazel.MakeLabelListAttribute(data),
-		Deps:         bazel.MakeLabelListAttribute(deps),
+		Srcs:         baseAttrs.Srcs,
+		Data:         baseAttrs.Data,
+		Deps:         baseAttrs.Deps,
 		Srcs_version: python_version,
 	}