1 files changed, 29 insertions, 0 deletions
diff --git a/challenge-260/steven-wilson/python/ch-1.py b/challenge-260/steven-wilson/python/ch-1.py
new file mode 100644
index 0000000000..4305bd667b
--- /dev/null
+++ b/challenge-260/steven-wilson/python/ch-1.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+
+def unique_occurences(*elements):
+    '''
+    >>> unique_occurences(1,2,2,1,1,3)
+    1
+    >>> unique_occurences(1,2,3)
+    0
+    >>> unique_occurences(-2,0,1,-2,1,1,0,1,-2,9)
+    1
+    '''
+    if not all(isinstance(elem, int) for elem in elements):
+        raise ValueError("Input must consist of integers")
+
+    from collections import Counter
+
+    counts = Counter(elements)
+    occurences = counts.values()
+    if len(counts) == len(set(occurences)):
+        return 1
+    else:
+        return 0
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()