1 files changed, 34 insertions, 0 deletions
diff --git a/mutual_friends.py b/mutual_friends.py
new file mode 100644
index 0000000..9de77cb
--- /dev/null
+++ b/mutual_friends.py
@@ -0,0 +1,34 @@
+# Copyright 2015 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is licensed under the terms of the MIT License.
+# See LICENSE.txt for details.
+
+import sys
+
+from api import *
+
+def query_friends(api, user):
+    return api.friends_get(user.get_uid(), fields=User.Field.SCREEN_NAME)
+
+def format_user(user):
+    if user.has_last_name():
+        return '{} {} ({})'.format(user.get_last_name(), user.get_first_name(), user.get_screen_name())
+    else:
+        return '{} ({})'.format(user.get_first_name(), user.get_screen_name())
+
+if __name__ == '__main__':
+    import argparse
+    parser = argparse.ArgumentParser(
+        description='Learn who your ex and her new boyfriend are both friends with.')
+
+    parser.add_argument(metavar='UID', dest='user_ids', nargs='+',
+                        help='user IDs or "screen names"')
+    args = parser.parse_args()
+
+    api = API(Language.EN)
+    users = api.users_get(args.user_ids, fields=User.Field.SCREEN_NAME)
+
+    friend_lists = map(lambda user: frozenset(query_friends(api, user)), users)
+    mutual_friends = frozenset.intersection(*friend_lists)
+    if mutual_friends:
+        for friend in mutual_friends:
+            print(format_user(friend))