Ruff formatting of space2stats_api directory

What I Changed

Ran ruff check . --select I,E,F,W --fix:

I: Import-related issues, such as incorrect import orders, unused imports, or imports that could be grouped.
E: General Python errors. These include issues typically flagged by tools like PyLint or Flake8 (e.g., syntax errors and incorrect indentation).
F: PyFlakes-related checks, which include warnings about potential errors, like undefined variables, unused variables, or imports.
W: Warnings, which cover a broad range of issues, often stylistic. These might include things like unnecessary parentheses or improper formatting.