example.py in trackler-2.2.1.88

- old
+ new
@@ -1,50 +1,17 @@
 gestures = ['wink', 'double blink', 'close your eyes', 'jump']
 
 
-def handshake(s):
-    s = list(sanitize(s))
-    s.reverse()
-    seq = []
-    lim = len(s) if len(s) <= len(gestures) else len(gestures)
-    for i1 in range(lim):
-        if s[i1] == '1':
-            seq.append(gestures[i1])
-    if len(s) == 5:
-        seq.reverse()
-    return seq
+def handshake(code):
+    actions = [gestures[i] for i in range(len(gestures))
+               if (code >> i) % 2 == 1]
+    return actions if code < 16 else list(reversed(actions))
 
 
-def code(seq):
-    if not seq or set(seq) - set(gestures):
-        return '0'
-    s = find_subseq(seq)
-    if not s:
-        s = ['1'] + find_subseq(reversed(seq))
-    return "".join(s)
-
-
-def sanitize(s):
-    if not(isinstance(s, int) or isinstance(s, str)):
-        raise TypeError('Unknown type')
-    if isinstance(s, int):
-        if s < 0:
-            return ""
-        s = bin(s)[2:]
-    elif set(s) - set(['0', '1']):
-        return ""
-    if len(s) > 5:
-        raise ValueError('Binary string too long')
-    return "0" * (len(gestures) - len(s)) + s
-
-
-def find_subseq(seq):
-    idx = 0
-    s = []
-    for g in seq:
-        if g not in gestures[idx:]:
-            return []
-        newidx = gestures.index(g, idx) + 1
-        s.extend(['0'] * (newidx - idx - 1) + ['1'])
-        idx = newidx
-    s.reverse()
-    return s
+def secret_code(actions):
+    actions = [a for a in actions if a in gestures]
+    result = sum(1 << i for i, action in enumerate(gestures)
+                 if action in actions)
+    if len(actions) > 1 and (gestures.index(actions[0]) >
+                             gestures.index(actions[1])):
+        result += 16
+    return result