import matplotlib.pyplot as plt

DATA = ((1, 3),

(2, 4),

(3, 1),

(4, 2))

# dash_style =

# direction, length, (text)rotation, dashrotation, push

# (The parameters are varied to show their effects,

# not for visual appeal).

dash_style = (

(0, 20, -15, 30, 10),

(1, 30, 0, 15, 10),

(0, 40, 15, 15, 10),

(1, 20, 30, 60, 10),

)

fig, ax = plt.subplots()

(x, y) = zip(*DATA)

ax.plot(x, y, marker='o')

for i in range(len(DATA)):

(x, y) = DATA[i]

(dd, dl, r, dr, dp) = dash_style[i]

#print('dashlen call %d' % dl)

t = ax.text(x, y, str((x, y)), withdash=True,

dashdirection=dd,

dashlength=dl,

rotation=r,

dashrotation=dr,

dashpush=dp,

)

ax.set_xlim((0.0, 5.0))

ax.set_ylim((0.0, 5.0))

plt.show()