Data update

Task/Fibonacci-sequence/Python/fibonacci-sequence-1.py

@@ -1,6 +1,8 @@
 from math import *
 
 def analytic_fibonacci(n):
+  assert isinstance(n,int), "n must be an integer."
+  assert n<=71 , "n must be <=71 due to floating point precision limitations."
   sqrt_5 = sqrt(5);
   p = (1 + sqrt_5) / 2;
   q = 1/p;