segmentation fault in pi calculation (python)

Question

def pi(times):
    seq = []
    counter = 0
    for x in range(times):
        counter += 2
        seq.append(\"((%f**2)/(%f*%f))*\"%(float(counter), float(counter-1),          


        

Answer 1

Why use eval() at all?

def pi(times):
    val = 1
    counter = 0
    for x in range(times) :
        counter += 2
        val *= float(counter)**2/(counter**2 - 1)
    return val * 2

Does the exact same thing.