# armin-ronacher

Armin Ronacher (creator of Flask, Jinja2, CTO of Sentry) argues current programming languages were designed for 'humans who type slowly.' The AI agent era has different needs. He details what agents love/hate, and why Go accidentally became the winner of the agentic coding era.

Flask creator Armin Ronacher (mitsuhiko) explains why he exclusively uses Pi — Mario Zechner's minimal coding agent with just four tools (Read, Write, Edit, Bash) — and how its extension system lets agents extend themselves. Pi powers OpenClaw under the hood and embodies the philosophy of 'software building software.' No MCP, no downloaded plugins — just tell the agent to build what it needs.