Triangle wave shaped array in Python

Question

What is the most efficient way to produce an array of 100 numbers that form the shape of the triangle wave below, with a max/min amplitude of 0.5?

Triangle waveform in m

Answer 1

To use numpy:

def triangle2(length, amplitude):
    section = length // 4
    x = np.linspace(0, amplitude, section+1)
    mx = -x
    return np.r_[x, x[-2::-1], mx[1:], mx[-2:0:-1]]