SW-695: P2->3 Use specialised OSError classes to only catch specific errors

CEP/Pipeline/recipes/sip/nodes/setupsourcedb.py

@@ -38,10 +38,8 @@ class setupsourcedb(LOFARnodeTCP):
             try:
                 os.makedirs(skydb_dir)
                 self.logger.debug("Created output directory %s" % skydb_dir)
-            except OSError as err:
-                # Ignore error if directory already exists, otherwise re-raise
-                if err[0] != errno.EEXIST:
-                    raise
+            except FileExistsError:
+                pass
 
             # ****************************************************************
             # 2 Remove any old sky database