What is the syntax of the activate() function in pybrain package?

I have a code which builds a [2,3,1] neural network with some values with full connection.

from pybrain.structure import FeedForwardNetwork, LinearLayer, SigmoidLayer, FullConnection
from pybrain.tools.shortcuts import buildNetwork

n = FeedForwardNetwork()

inLayer = LinearLayer(2)
hiddenLayer = SigmoidLayer(3)
outLayer = LinearLayer(1)

n.addInputModule(inLayer)
n.addModule(hiddenLayer)
n.addOutputModule(outLayer)

in2hidden = FullConnection(inLayer, hiddenLayer)
hidden2out = FullConnection(hiddenLayer, outLayer)
n.addConnection(in2hidden)
n.addConnection(hidden2out)

print n.activate([1, 2])

This is the code. Its clear that activate() function takes a list as input.I cant understand what is the contents of the list. Please help.