Problem

15 locations use synchronous I/O operations inside async functions, blocking the event loop and degrading performance.

SonarQube Rules: python:S7493 (file I/O), python:S7487 (subprocess)
Severity: MAJOR

Sync File I/O (12 issues)

# BAD
async def load_data():
    with open("file.json") as f:
        return json.load(f)

# GOOD
async def load_data():
    async with aiofiles.open("file.json") as f:
        content = await f.read()
        return json.loads(content)

Affected Files

Sync Subprocess (3 issues)

# BAD
async def run_command():
    result = subprocess.run(["cmd"], capture_output=True)

# GOOD
async def run_command():
    proc = await asyncio.create_subprocess_exec("cmd", stdout=asyncio.subprocess.PIPE)
    stdout, _ = await proc.communicate()

Affected Files

Fix Strategy

1. Add aiofiles dependency if not present
2. Replace open() with aiofiles.open()
3. Replace subprocess.run() with asyncio.create_subprocess_exec()
4. For small files, consider using asyncio.to_thread() as alternative