def add(nums):
    result = 0
    for i in nums:
        result = result + i
    return result

def subtract(nums):
    result = 0
    for i in nums:
        result = result - i
    return result
        
def multiply(nums):
    result = 1
    for i in nums:
        result = result * i
    return result

def divide(nums):
    result = 1                  # / a     (((a/b)/c)/d)/e
    for i in nums:
        if i != 0
    return num1 / num2 

    first = nums[0] 
    second = nums[1]
    rest = nums[2:]      # nums[start:stop:step]   >=start  <stop +step   [2:6:2]  n[2] != n[2:]
    result = first/second
    for num in rest:
        result = result / num

    result = None
    for num in nums:
        if result is None:
            result = num
        else:
            result = result / num

    else 
    for i + =1
    return result

def square(num1):
    return num1**2
    return result

def cube(num1):
    return num1**3
    return result

def power(num1, num2):
    return num1**num2
    return result

def mod(num1, num2):
    return num1 % num2
    return result



while (i++ < 10) {
    
}

while True:
    i += 1   # i = i + 1
    if i == 10:
        break

if (nextval == get_from_user()) {
    
}