https://codility.com/demo/results/trainingWGQJ5F-49G/

CyclicRotation.py

# you can write to stdout for debugging purposes, e.g.
# print "this is a debug message"

def solution(A, K):
    # write your code in Python 2.7
    result = []
    
    L = len(A)
    if L <= 1 or not K or L == K:
        return A
    if L < K:
        K = K % L
        
    A_ = reverse(A)
    L  = reverse(A_[:K])
    R  = reverse(A_[K:])
    
    if L:
        result = result + L
    if R:
        result = result + R
        
    return result
    

def reverse(A):
    L = len(A) - 1
    i = 0
    
    if L < 0: return

    while i <= L/2:
        tmp = A[i]
        A[i] = A[L - i]
        A[L - i] = tmp
        i += 1
        
    return A