module 'collections' has no attribute 'Iterator'

[glyh]

To reproduce:

$ zerorpc --server --bind tcp://*:1234 time
$ zerorpc --client --connect tcp://127.0.0.1:1234 strftime %Y/%m/%d

Error at client side:

connecting to "tcp://127.0.0.1:1234"
Traceback (most recent call last):
  File "/sbin/zerorpc", line 33, in <module>
    sys.exit(load_entry_point('zerorpc==0.6.3', 'console_scripts', 'zerorpc')())
  File "/usr/lib/python3.10/site-packages/zerorpc/cli.py", line 310, in main
    return run_client(args)
  File "/usr/lib/python3.10/site-packages/zerorpc/cli.py", line 270, in run_client
    if not isinstance(results, collections.Iterator):
AttributeError: module 'collections' has no attribute 'Iterator'

[dwarg]

On line 270, in cli.py, change if not isinstance(results, collections.Iterator):
to if not isinstance(results, collections.abc.Iterator):

[bombela]

Some sort of backward incompatible change from the python lib? How does this change still works on older version of python 😨