Data update

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

@@ -1,8 +1,6 @@
 '''Fibonacci accumulation'''
 
-from itertools import accumulate, chain
-from operator import add
-
+from itertools import accumulate
 
 # fibs :: Integer :: [Integer]
 def fibs(n):
@@ -10,22 +8,16 @@ def fibs(n):
        the Fibonacci series. The accumulator is a
        pair of the two preceding numbers.
     '''
-    def go(ab, _):
-        return ab[1], add(*ab)
-
-    return [xy[1] for xy in accumulate(
-        chain(
-            [(0, 1)],
-            range(1, n)
-        ),
-        go
-    )]
+    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(
-        'First twenty: ' + repr(
-            fibs(20)
-        )
-    )
+    print(f'First twenty: {fibs(20)}')

Task/Fibonacci-sequence/Python/fibonacci-sequence-15.py

@@ -1,21 +1,18 @@
 '''Nth Fibonacci term (by folding)'''
 
 from functools import reduce
-from operator import add
-
 
 # nthFib :: Integer -> Integer
 def nthFib(n):
     '''Nth integer in the Fibonacci series.'''
-    def go(ab, _):
-        return ab[1], add(*ab)
-    return reduce(go, range(1, n), (0, 1))[1]
+    return reduce(
+        lambda acc, _: (acc[1], sum(acc)),
+        range(1, n),
+        (0, 1)
+    )[0]
 
 
 # MAIN ---
 if __name__ == '__main__':
-    print(
-        '1000th term: ' + repr(
-            nthFib(1000)
-        )
-    )
+    n = 1000
+    print(f'{n}th term: {nthFib(n)}')

Task/Fibonacci-sequence/Python/fibonacci-sequence-18.py

@@ -1,7 +0,0 @@
-fi1=fi2=fi3=1 # FIB Russia rextester.com/FEEJ49204
-for da in range(1, 88): # Danilin
-    print("."*(20-len(str(fi3))), end=' ')
-    print(fi3)
-    fi3 = fi2+fi1
-    fi1 = fi2
-    fi2 = fi3