ImportError: cannot import name 'Annotated' from 'pydantic.typing' when using inflect library in Python

Question

Hello I am using Python 3.8

And I am trying to create a function to sort and print a list in the form of,

{first_element}, {second_element} and {last_element}

I've used the inflect library in Python to do this because it is expected to be used in my assignment.

import inflect
p = inflect.engine()

def sort():
    fruits = ["apple", "banana", "carrot"]
    mylist = p.join(fruits)
    print(mylist)

sort()

But when I execute this I get the following error:

Traceback (most recent call last):
  File "main.py", line 1, in <module>
    import inflect
  File "/home/username/.local/lib/python3.8/site-packages/inflect/__init__.py", line 77, in <module>
    from pydantic.typing import Annotated
ImportError: cannot import name 'Annotated' from 'pydantic.typing' (/home/username/.local/lib/python3.8/site-packages/pydantic/typing.py)

I tried reinstalling the library called Pydantic. But it didn't change anything.

Answer 1

Pydantic 2.0 was released a few hours ago which has introduced breaking changes for inflect.

Ideally, inflect should have had an upper max for pydantic version in their project. Track the issue on inflect here.

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Check what version of pydantic is installed on your machine. It must be 2.0. You need to uninstall that and install the highest 1.xx.x.

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I understand this answer will be obsolete once this issue resolves, but here are the only two things to do when such breaking changes are encountered:

1. Check the version you have installed in your machine.
2. Check for issues on the project's GitHub page.