Python - funcion suma

def suma():

    lista = [5,5]

    suma = lista[0] + lista[1]

    print suma

suma()

def suma():

    lista = [5,6,9,3,10]

    x = 0

    suma = 0

    while x < len(lista):

        suma = suma + lista[x]

        x = x + 1

    print suma

suma()

lista = []

for i in range(1,11):

    lista.append(i)

print lista