Fix broken Python basics exercise scripts (issue #27)

[niall-stack]

Summary\nFixes the broken starter scripts under est_playground/basics/ referenced in #27 so they now match the expected behavior in inline comments.\n\n### Files fixed\n- hello.py: corrected Hello World print syntax\n- input_output.py: added proper type casting, list parsing, f-string interpolation, and compact multiline print\n- �ars_and_ops.py: fixed mixed-type addition, corrected division output/rounding, simplified power logic, corrected bitwise operator labels\n- conditionals.py: fixed age casting/age buckets, completed day match, corrected exception handling\n- loops.py: fixed multiples-of-5 loop, completed zip output formatting, added 3-list zip example, case-insensitive loop condition\n- �oss.py: simplified/fixed expression handling and error reporting in a working loop\n\n## Validation\nManual code review against expected comments in each file.\n\nNote: I could not run these scripts in this environment because a Python runtime is not installed on host (py -3.11 not available).

[Once-1296]

Read Contributing.md

First you are not supposed to edit any files outside your own solutions folder

(which is made by you and named as _solutions

replace <github_id> with your actual GITHUB ID

Either undo the wrong changes or start a new PR

and also please strictly follow the PR format guide. and state your name and details

If I dont see changes, I will close the PR.

If a mentor is assigned please refer them to guidance.

[Once-1296]

Closing this issue now, please make proper PR next time, take guidance of mentor. Till then u can practice python by running the tutorial codes locally.