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

Content added Content deleted

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@@ Line 529: / Line 529: @@
 def nthInstanceReplaced(ruleMap):
     def go(a, c):
-        i = a.get(c, 0)
+        if c in ruleMap:
-        deltas = ruleMap.get(c, [])
+            i = a.get(c, 0)
-        return (
+            deltas = ruleMap.get(c)
-            dict(a, **{c: 1 + i}) if c in ruleMap else a,
+            return (
-            deltas[i] or c if i < len(deltas) else c
+                dict(a, **{c: 1 + i}),
+                deltas[i] or c if i < len(deltas) else c
-        )
+            )
+        else:
+            return a, c
     return lambda s: ''.join(