cooper@us:~/repos$ /opt/venvs/eb/bin/python3.7 example_with_fifos.py
exabgp 4.1.0-2074ac17
done

cooper@us:~/repos$ sudo /opt/venvs/eb/bin/python3.7 example_with_fifos.py
exabgp 4.1.0-2074ac17
done

Code:
cooper@us:~/repos$ cat example_with_fifos.py
#!/usr/bin/env python3

from pathlib import Path

IN_FILE = Path("/run/exabgp.in")
OUT_FILE = Path("/run/exabgp.out")

cmd = "version\n"

with IN_FILE.open("w") as infp:
        infp.write(cmd)

with OUT_FILE.open("r") as outfp:
        print(outfp.read())