new files

Task/Search-a-list/Python/search-a-list-1.py

@@ -0,0 +1,7 @@
+haystack=["Zig","Zag","Wally","Ronald","Bush","Krusty","Charlie","Bush","Bozo"]
+
+for needle in ("Washington","Bush"):
+  try:
+    print haystack.index(needle), needle
+  except ValueError, value_error:
+    print needle,"is not in haystack"

Task/Search-a-list/Python/search-a-list-2.py

@@ -0,0 +1,9 @@
+>>> haystack=["Zig","Zag","Wally","Ronald","Bush","Krusty","Charlie","Bush","Bozo"]
+>>> haystack.index('Bush')
+4
+>>> haystack.index('Washington')
+Traceback (most recent call last):
+  File "<pyshell#95>", line 1, in <module>
+    haystack.index('Washington')
+ValueError: list.index(x): x not in list
+>>>

Task/Search-a-list/Python/search-a-list-3.py

@@ -0,0 +1,13 @@
+>>> def hi_index(needle, haystack):
+	return len(haystack)-1 - haystack[::-1].index(needle)
+
+>>> # Lets do some checks
+>>> for n in haystack:
+	hi = hi_index(n, haystack)
+	assert haystack[hi] == n, "Hi index is of needle"
+	assert n not in haystack[hi+1:], "No higher index exists"
+	if haystack.count(n) == 1:
+		assert hi == haystack.index(n), "index == hi_index if needle occurs only once"
+
+		
+>>>