Data update

Task/Fibonacci-sequence/Python/fibonacci-sequence-14.py

@@ -1,23 +1,11 @@
-'''Fibonacci accumulation'''
+from itertools import islice
 
-from itertools import accumulate
+def fib():
+    yield 0
+    yield 1
+    a, b = fib(), fib()
+    next(b)
+    while True:
+        yield next(a)+next(b)
 
-# fibs :: Integer :: [Integer]
-def fibs(n):
-    '''An accumulation of the first n integers in
-       the Fibonacci series. The accumulator is a
-       pair of the two preceding numbers.
-    '''
-    return [
-        a
-        for a, b in accumulate(
-            range(1, n),  # we don't actually use these numbers
-            lambda acc, _: (acc[1],  sum(acc)),
-            initial = (0, 1)
-        )
-    ]
-
-
-# MAIN ---
-if __name__ == '__main__':
-    print(f'First twenty: {fibs(20)}')
+print(tuple(islice(fib(), 10)))