STYLE: Fix Pylint Style Checks For used-before-assignment
- [ ] xref #48855 - one of many style checks, still needs work.
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [x] Moved initialization of `dispcmd`, `fd`, `new_f` outside of their respective try blocks to ensure they are defined
- [x] Added Pylint disable statements for false positive warnings for `_is_scipy_sparse`, `groupby`, and `Series`
- [x] Removed possibly undefined variable `no_mpl_message`
- [x] Moved `f.close()` to try block to ensure `f` is defined if it is called


I don't know what's causing the CI testing to fail now. Do I need to change anything to fix that?  it's unrelated, don't worry about it, let's just wait a bit to see if it looks like pylint might make a release which fixes it This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this.