Remove some uses of '<>'.
diff --git a/Lib/plat-riscos/riscosenviron.py b/Lib/plat-riscos/riscosenviron.py
index 95a2ce5..800ffcf 100644
--- a/Lib/plat-riscos/riscosenviron.py
+++ b/Lib/plat-riscos/riscosenviron.py
@@ -13,7 +13,7 @@
         return len(riscos.getenvdict())
     def __getitem__(self, key):
         ret = riscos.getenv(key)
-        if ret<>None:
+        if ret != None:
             return ret
         else:
             raise KeyError