Even more removals of '<>'; I can hear Barry shedding a manly tear ...
diff --git a/Lib/plat-riscos/riscosenviron.py b/Lib/plat-riscos/riscosenviron.py
index 800ffcf..6b0f821 100644
--- a/Lib/plat-riscos/riscosenviron.py
+++ b/Lib/plat-riscos/riscosenviron.py
@@ -31,7 +31,7 @@
     def values(self): return riscos.getenvdict().values()
     def has_key(self, key):
         value = riscos.getenv(key)
-        return value<>None
+        return value != None
     def __contains__(self, key):
         return riscos.getenv(key) is not None
     def update(self, dict):