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sponge.py

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+def sponge(stringington):
+    lengthofhim = len(stringington)
+    indexo = 0
+    listino = []
+    while indexo < lengthofhim:
+        if indexo % 2 == 0:
+            newboy = (stringington[indexo].lower())
+        else:
+            newboy = (stringington[indexo].upper())
+        listino.append(newboy)
+        indexo += 1
+    theoutput = "".join(listino)
+    return theoutput
+
+if __name__ == "__main__":
+    x = input("Type something here.\n")
+    print("\n" + sponge(x))