Python 3 plistlib error

[magnusviri]

I changed the first line of the script to call python3 and when I run it this is what I get.

Traceback (most recent call last):
  File "/usr/local/bin/plistyamlplist_lib/plist_yaml.py", line 20, in <module>
	from plistlib import Data  # Python 3
ImportError: cannot import name 'Data' from 'plistlib' (/usr/local/Cellar/[email protected]/3.9.4/Frameworks/Python.framework/Versions/3.9/lib/python3.9/plistlib.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/plistyamlplist", line 21, in <module>
	from plistyamlplist_lib.plist_yaml import plist_yaml
  File "/usr/local/bin/plistyamlplist_lib/plist_yaml.py", line 23, in <module>
	from plistlib import Data  # Python 2
ImportError: cannot import name 'Data' from 'plistlib' (/usr/local/Cellar/[email protected]/3.9.4/Frameworks/Python.framework/Versions/3.9/lib/python3.9/plistlib.py)