Remove frozendict import as it generates an error in python 3.11:
Traceback (most recent call last):
File "/usr/local/google/dc/refresh/git_us_usda/data/scripts/us_fed/treasury_constant_maturity_rates/generate_csv_and_mcf.py", line 31, in <module>
from frozendict import frozendict
File "/google/src/cloud/ajaits/dc-github/google3/env_py_3_11/lib/python3.11/site-packages/frozendict/__init__.py", line 16, in <module>
class frozendict(collections.Mapping):
^^^^^^^^^^^^^^^^^^^
AttributeError: module 'collections' has no attribute 'Mapping'
Remove frozendict import as it generates an error in python 3.11: