Developer rewrites 2150-line Bash agent in Python, finds line count actually rose
A developer rebuilt a routine-task automation agent from 2150 lines of Bash across seven files into Python, ending up with 2258 lines — not the reduction most would expect. The decision to switch was not driven by performance, since the agent's runtime is dominated by AI model calls, not the 162 shell forks. The real trigger was an expressiveness problem: complex data manipulations required awkward jq subprocess calls that Python list comprehensions handled far more cleanly. A key architectural choice — storing prompts as standalone Markdown files with placeholders — meant no prompt content needed to change during the migration, keeping the rewrite contained to a single day. The developer concluded Bash was not the wrong original choice, but that a shifted requirement around data handling ultimately made Python the better fit going forward.
