added dicts

Author: kennyyu

examples/dicts.py

@@ -0,0 +1,18 @@
+d = {"cat" : 2, "tiger": 0}
+d["food"] = 5
+d["cheese"] = 7
+d["apple"] = "orange"
+d[8] = "penguin"
+
+print d
+print len(d) # number of keys
+for key in d:
+    print key, d[key]
+
+for key, value in d.items():
+    print key, value
+
+print "check if food is in d", "food" in d
+del d["food"]
+print "check if food is in d", "food" in d
+