python 3 updates

[marksmayo]

• remove unnecessary inherits from object
• no need to super(..., self) for init
• remove strings prefixed with u for python 3 remove whitespace and fix newlines tidy indentation sort imports with isort

[BAAI-OpenPlatform]

• remove unnecessary inherits from object
• no need to super(..., self) for init
• remove strings prefixed with u for python 3 remove whitespace and fix newlines tidy indentation sort imports with isort

Hi marksmayo, thank you so much for your contribution. However, this pr has so many files changed. Could you please raise an issue and link the pr to that issue, and we will work on it.

[marksmayo]

thanks, I'm keen to fix the test failures tho, so if you could approve the workflows I'll see if my latest merge has sorted it.

[marscrazy]

There are many failures in the tests. Please fix these errors and raise a pull request again. Thanks.