05 — Data Handling

Strings, files, JSON, CSV, regex, exceptions, and logging.

How each lesson works

Each .py file contains THEORY (docstring at top) + PRACTICE (numbered runnable sections).

python3 core-python/modules/05-data-handling/01_string_basics.py

File	Topic
`01_string_basics.py`	Indexing, slicing, immutability
`02_string_methods.py`	split, join, strip, replace
`03_string_formatting.py`	f-strings, format(), alignment
`04_regex_intro.py`	re module basics
`05_read_write_text.py`	open(), read, write
`06_json_files.py`	json.load, json.dump
`07_csv_files.py`	csv reader/writer
`08_path_handling.py`	pathlib
`09_try_except.py`	Exception handling
`10_multiple_exceptions.py`	Multiple except blocks
`11_raise_custom.py`	raise, custom exceptions
`12_finally_else.py`	finally, else on try
`13_logging.py`	logging module

Interview prep: INTERVIEW.md — 27+ questions with answers