Infinite series sum

from math import *

def func(n, m):
    result = 32 * sinh( (pi/2) * sqrt(m**2 + n**2) )
    result *= sin(m * pi/2) * sin(n * pi/2)
    result /= (m * n * sinh(pi * sqrt(m**2 + n**2)) * pi**2)
    return result

def main():
    accuracy=float(input("Enter accuracy: "))
    firstPreResult = -1
    firstSumResult = 0
    n = 1
    while abs(firstSumResult - firstPreResult) >= accuracy:
        m = 1
        secondPreResult = 0
        secondSumResult = func(n, m)
        while abs(secondSumResult - secondPreResult) >= accuracy:
            m+=2
            secondPreResult = secondSumResult
            secondSumResult += func(n, m)
        firstPreResult = firstSumResult
        firstSumResult += secondSumResult
        n+=2
    print("Result : %f" % firstSumResult)

if __name__ == "__main__":
    main()