yield_syntax_rocks.py

# assembling a list the old way

def do_stuff(x, y, z):
    l = []
    l += do_x(x)
    l += do_y(y)
    l += do_z(z)
    return l

# assembling a list with generators (much easier to read!):

def do_stuff(x, y, z):
    yield from do_x(x)
    yield from do_y(y)
    yield from do_z(z)