# This may be required if you are on a Mac and default to using OSX as

# your backend

# import matplotlib

# matplotlib.use('qt5agg')

import matplotlib.pyplot as plt

import numpy as np

last_ev = None

def event_printer(event):

"""Helper function for exploring events.

Prints all public attributes +

"""

# capture the last event

global last_ev

last_ev = event

if hasattr(event, 'inaxes') and event.inaxes is not None:

print(f'{event.name} ({event.xdata:.3f}, {event.ydata:.3f})')

else:

print(f'{event.name}')

th = np.linspace(0, 2*np.pi, 64)

fig, ax = plt.subplots()

ax.plot(th, np.sin(th), 'o-', picker=5)

cids = {k: fig.canvas.mpl_connect(k, event_printer)

for k in ('button_press_event', 'button_release_event',

'scroll_event',

'key_press_event', 'key_release_event',

'pick_event')}

plt.show()