"""Helper functions"""

import base64
from sys import version_info

def bytes_to_base64(in_bytes: bytes) -> str:
    """Converts bytes to base64-encoded str using the appropriate system version.
    """
    if version_info >= (3, 0):
        return str(base64.b64encode(in_bytes), encoding="utf-8")
    else:
        return str(base64.b64encode(in_bytes)).encode("utf-8")