ir.py

# add this to your hardhat config
#     compilers: [
#      {
#        version: "0.8.13",
#         settings: {
#           viaIR: true,
#           outputSelection: {
#             "*": {
#               "*": ["irOptimized"],
#             },
#           },
#         }
#     ]
import os
import json
import subprocess

subprocess.run(["npx", "hardhat", "compile"])

assert "artifacts" in os.listdir()

for dirpath, _, files in os.walk(os.path.join(os.getcwd(), "artifacts", "build-info")):
    for f in files:
        artifact = os.path.abspath(os.path.join(dirpath, f))
        with open(artifact) as a:
            data = json.load(a)
        if "contracts/Contract.sol" in data["output"]["contracts"]:
            with open("ir.sol", "w+") as file:
                file.write(str(data["output"]["contracts"]["contracts/Contract.sol"]["Contract"]["irOptimized"]))
            break