More idiomatic code, use defaultdict

Author: Karan Goel

Text/count_vowels.py

@@ -4,15 +4,16 @@
 have it report a sum of each vowel found.
 """
 
+from collections import defaultdict
+
 if __name__ == '__main__':
     string = raw_input('Enter a string: ').lower()
 
     vowels = ['a', 'e', 'i', 'o', 'u']
-    counts = dict(zip(vowels, [0]*5))
+    counts = defaultdict(int)
 
-    for vowel in counts:
-        for char in string:
-            if vowel == char:
-                counts[vowel] += 1
+    for char in string:
+        if char in vowels:
+            counts[char] += 1
 
-    print counts
+    print counts.items()