Inconsistent usage of the pytest decorators

[Sonu0305]

Describe the bug

Inconsistent usage of pytest decorators which does not make sure consistent codestyle throughout codebase.
Both @pytest.fixture() and @pytest.fixture have been used in the codebase.

To Reproduce

Screenshots

System

• OS:

  • GNU/Linux
  • macOS

• Environment (conda list):

Additional context
Total 57 occurences of @pytest.fixture throughout 17 files with few @fixture and others are @pytest.fixture()