Highlight imports on decorator lines.

after/syntax/python.vim

@@ -1,14 +1,17 @@
 " Avoid highlighting imported objects if they're preceded by a period
-syntax match impsortNonImport #\.\k\+# transparent contains=TOP,pythonAttribute,pythonImportedObject,pythonImportedFuncDef,pythonImportedClassDef,pythonImportedModule
+syntax cluster impsortObjects contains=pythonImportedObject,pythonImportedFuncDef,pythonImportedClassDef,pythonImportedModule
+syntax match impsortNonImport #\.\k\+# transparent contains=TOP,pythonAttribute,@impsortObjects
 
 " Prevents imports from being matched in the first part of `from ... import`
 " lines.  `pythonInclude` is the built-in syntax's name.  `pythonImport` is
 " from the `python-syntax` plugin.
-silent! syntax clear pythonInclude pythonImport
+silent! syntax clear pythonInclude pythonImport pythonDecorator
 syntax keyword pythonImport contained from
 syntax keyword pythonImport import
 syntax match pythonIncludeLine #\<from\s\+\S\+\s# transparent contains=pythonImport
 
+syntax region pythonDecorator start=#@# end=#$# oneline contains=@impsortObjects,pythonDottedName,pythonFunction
+
 " Highlight links should cover both syntax sources without screwing up user
 " defined highlights
 highlight default link pythonImport pythonInclude