from time import sleep

def connect(server):
    print("Attempting to connecting to", server)
    sleep(2)
    raise ConnectionRefusedError("Couldn't connect")
    print("Connected to", server)

try:
    conn = connect('main-server')
except ConnectionRefusedError as connection_refused:
    # connection_refused.handled = True
    conn = connect('backup-server')

Traceback (most recent call last):
  File "<pyshell#37>", line 2, in <module>
    conn = connect('main-server')
  File "<pyshell#26>", line 2, in connect
    raise ConnectionRefusedError("Couldn't connect")
ConnectionRefusedError: Couldn't connect

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<pyshell#37>", line 4, in <module>
    conn = connect('backup-server')
  File "<pyshell#26>", line 2, in connect
    raise ConnectionRefusedError("Couldn't connect")
ConnectionRefusedError: Couldn't connect

try:
    conn = connect('main-server')
except ConnectionRefusedError:
    conn = None

if not conn:
    conn = connect('backup-server')

for server in ('main-server', 'backup-server'):
    try:
        conn = connect(server)
        break
    except ConnectionRefusedError:
        continue
else:
    raise ConnectionRefusedError("Couldn't connect to any server")

try:
    conn = connect('main-server')
except ConnectionRefusedError:
    try:
        conn = connect('backup-server')
    except ConnectionRefusedError as nested:
        raise nested from None

except ConnectionRefusedError as connection_refused:
    # connection_refused.handled = True