def is_yahtzee(dice):                      # ➊
    """dice is a list of five integers"""  # ➋ 
    return len(set(dice)) == 1             # ➌
    
if __name__ == "__main__":
    # tests   
    print("testing...")
    assert is_yahtzee([1,2,3,4,5]) == False    # ➍ 
    assert is_yahtzee([6,5,6,6,6]) == False
    assert is_yahtzee([2,2,2,2,2]) == True
    assert is_yahtzee([2,4,4,2,2]) == False
    print("all tests passed")                  # ➎