Corrected a few C'isms and also added the solutions to four more problems

problem_24.py

@@ -0,0 +1,26 @@
+
+# A permutation is an ordered arrangement of objects.
+# For example, 3124 is one possible permutation of the
+# digits 1, 2, 3 and 4. If all of the permutations are
+# listed numerically or alphabetically, we call it
+# lexicographic order. The lexicographic permutations of 0, 1 and 2 are:
+#
+# 012   021   102   120   201   210
+#
+# What is the millionth lexicographic permutation of the digits
+# 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9?
+
+# learned about itertools from problem 23. Python is wonderful
+
+import itertools
+
+list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+uniquelist = set(list)
+
+iter = 0
+for n in itertools.permutations(uniquelist, 10):
+    iter += 1
+    if iter == 1000000:
+        print(n)
+        break