root_scripts/read_main_ppo.py

import verl, os
verl_dir = os.path.dirname(verl.__file__)

# Read main_ppo.py (full content, truncated output)
with open(os.path.join(verl_dir, "trainer", "main_ppo.py")) as f:
    content = f.read()
print("=== main_ppo.py ===")
print(content[:3000])
print("...")
print(content[-500:])