<doocs>1991.Find the Middle Index in Array_1.py
def findMiddleIndex( nums: List[int]) -> int:
    s = sum(nums)
    total = 0
    for i, num in enumerate(nums):
        total += num
        if total - num == s - total:
            return i
    return -1
def sample_funcname ( var_0 : List [ int ] ) -> int :
    var_4 = sum ( var_0 )
    var_6 = 0
    for var_8 , var_9 in enumerate ( var_0 ) :
        var_6 += var_9
        if var_6 - var_9 == var_4 - var_6 :
            return var_8
    return - 1
