[enh] add quick answer functionality with an example answerer

searx/answerers/random/answerer.py

@@ -0,0 +1,50 @@
+import random
+import string
+from flask_babel import gettext
+
+# required answerer attribute
+# specifies which search query keywords triggers this answerer
+keywords = ('random',)
+
+random_int_max = 2**31
+
+random_string_letters = string.lowercase + string.digits + string.uppercase
+
+
+def random_string():
+    return u''.join(random.choice(random_string_letters)
+                    for _ in range(random.randint(8, 32)))
+
+
+def random_float():
+    return unicode(random.random())
+
+
+def random_int():
+    return unicode(random.randint(-random_int_max, random_int_max))
+
+
+random_types = {u'string': random_string,
+                u'int': random_int,
+                u'float': random_float}
+
+
+# required answerer function
+# can return a list of results (any result type) for a given query
+def answer(query):
+    parts = query.query.split()
+    if len(parts) != 2:
+        return []
+
+    if parts[1] not in random_types:
+        return []
+
+    return [{'answer': random_types[parts[1]]()}]
+
+
+# required answerer function
+# returns information about the answerer
+def self_info():
+    return {'name': gettext('Random value generator'),
+            'description': gettext('Generate different random values'),
+            'examples': [u'random {}'.format(x) for x in random_types]}