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diff --git a/challenge-266/packy-anderson/python/ch-1.py b/challenge-266/packy-anderson/python/ch-1.py
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+++ b/challenge-266/packy-anderson/python/ch-1.py
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+#!/usr/bin/env python
+
+from collections import Counter
+
+def occursOnce(line):
+  # create a Counter of all words
+  all = Counter(line.split())
+  # create a list of words that occur once in the Counter
+  return [ word for word in list(all) if all[word] == 1 ]
+
+def uncommonWords(line1, line2):
+  return occursOnce(
+     ' '.join(occursOnce(line1) + occursOnce(line2))
+  )
+
+def quoted_comma_join(arr):
+    return "'" + "', '".join(arr) + "'"
+
+def solution(line1, line2):
+    print(f"Input: $line1 = '{line1}'")
+    print(f"       $line2 = '{line2}'")
+    uncommon = uncommonWords(line1, line2)
+    print(f'Output: ({quoted_comma_join(uncommon)})')
+
+print('Example 1:')
+solution('Mango is sweet', 'Mango is sour')
+
+print('\nExample 2:')
+solution('Mango Mango', 'Orange')
+
+print('\nExample 3:')
+solution('Mango is Mango', 'Orange is Orange')