Selectively replace multiple instances of a character within a string: Difference between revisions

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@@ Line 568: / Line 568: @@
 def nthInstanceReplaced(ruleMap):
     def go(a, c):
-        if c in a:
+        ds = a.get(c, None)
-            ds = a.get(c)
+        return (
-            return (
+            dict(a, **{c: ds[1:]}),
-                dict(a, **{c: ds[1:]}),
+            ds[0] or c
-                ds[0] or c
+        ) if ds else (a, c)
-            ) if ds else (a, c)
-        else:
-            return a, c
     return lambda s: ''.join(