mysql-connector-python/lib/mysql/connector/utils.py [384:482]:
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def _parse_os_release() -> Dict[str, str]:
    """Parse the contents of /etc/os-release file.

    Returns:
        A dictionary containing release information.
    """
    distro: Dict[str, str] = {}
    os_release_file = os.path.join("/etc", "os-release")
    if not os.path.exists(os_release_file):
        return distro
    with open(os_release_file, encoding="utf-8") as file_obj:
        for line in file_obj:
            key_value = line.split("=")
            if len(key_value) != 2:
                continue
            key = key_value[0].lower()
            value = key_value[1].rstrip("\n").strip('"')
            distro[key] = value
    return distro


def _parse_lsb_release() -> Dict[str, str]:
    """Parse the contents of /etc/lsb-release file.

    Returns:
        A dictionary containing release information.
    """
    distro = {}
    lsb_release_file = os.path.join("/etc", "lsb-release")
    if os.path.exists(lsb_release_file):
        with open(lsb_release_file, encoding="utf-8") as file_obj:
            for line in file_obj:
                key_value = line.split("=")
                if len(key_value) != 2:
                    continue
                key = key_value[0].lower()
                value = key_value[1].rstrip("\n").strip('"')
                distro[key] = value
    return distro


def _parse_lsb_release_command() -> Optional[Dict[str, str]]:
    """Parse the output of the lsb_release command.

    Returns:
        A dictionary containing release information.
    """
    distro = {}
    with open(os.devnull, "w", encoding="utf-8") as devnull:
        try:
            stdout = subprocess.check_output(("lsb_release", "-a"), stderr=devnull)
        except OSError:
            return None
        lines = stdout.decode(sys.getfilesystemencoding()).splitlines()
        for line in lines:
            key_value = line.split(":")
            if len(key_value) != 2:
                continue
            key = key_value[0].replace(" ", "_").lower()
            value = key_value[1].strip("\t")
            distro[key] = value
    return distro


def linux_distribution() -> Tuple[str, str, str]:
    """Tries to determine the name of the Linux OS distribution name.

    First tries to get information from ``/etc/os-release`` file.
    If fails, tries to get the information of ``/etc/lsb-release`` file.
    And finally the information of ``lsb-release`` command.

    Returns:
        A tuple with (`name`, `version`, `codename`)
    """
    distro: Optional[Dict[str, str]] = _parse_lsb_release()
    if distro:
        return (
            distro.get("distrib_id", ""),
            distro.get("distrib_release", ""),
            distro.get("distrib_codename", ""),
        )

    distro = _parse_lsb_release_command()
    if distro:
        return (
            distro.get("distributor_id", ""),
            distro.get("release", ""),
            distro.get("codename", ""),
        )

    distro = _parse_os_release()
    if distro:
        return (
            distro.get("name", ""),
            distro.get("version_id", ""),
            distro.get("version_codename", ""),
        )

    return ("", "", "")
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mysqlx-connector-python/lib/mysqlx/utils.py [41:139]:
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def _parse_os_release() -> Dict[str, str]:
    """Parse the contents of /etc/os-release file.

    Returns:
        A dictionary containing release information.
    """
    distro: Dict[str, str] = {}
    os_release_file = os.path.join("/etc", "os-release")
    if not os.path.exists(os_release_file):
        return distro
    with open(os_release_file, encoding="utf-8") as file_obj:
        for line in file_obj:
            key_value = line.split("=")
            if len(key_value) != 2:
                continue
            key = key_value[0].lower()
            value = key_value[1].rstrip("\n").strip('"')
            distro[key] = value
    return distro


def _parse_lsb_release() -> Dict[str, str]:
    """Parse the contents of /etc/lsb-release file.

    Returns:
        A dictionary containing release information.
    """
    distro = {}
    lsb_release_file = os.path.join("/etc", "lsb-release")
    if os.path.exists(lsb_release_file):
        with open(lsb_release_file, encoding="utf-8") as file_obj:
            for line in file_obj:
                key_value = line.split("=")
                if len(key_value) != 2:
                    continue
                key = key_value[0].lower()
                value = key_value[1].rstrip("\n").strip('"')
                distro[key] = value
    return distro


def _parse_lsb_release_command() -> Optional[Dict[str, str]]:
    """Parse the output of the lsb_release command.

    Returns:
        A dictionary containing release information.
    """
    distro = {}
    with open(os.devnull, "w", encoding="utf-8") as devnull:
        try:
            stdout = subprocess.check_output(("lsb_release", "-a"), stderr=devnull)
        except OSError:
            return None
        lines = stdout.decode(sys.getfilesystemencoding()).splitlines()
        for line in lines:
            key_value = line.split(":")
            if len(key_value) != 2:
                continue
            key = key_value[0].replace(" ", "_").lower()
            value = key_value[1].strip("\t")
            distro[key] = value
    return distro


def linux_distribution() -> Tuple[str, str, str]:
    """Tries to determine the name of the Linux OS distribution name.

    First tries to get information from ``/etc/os-release`` file.
    If fails, tries to get the information of ``/etc/lsb-release`` file.
    And finally the information of ``lsb-release`` command.

    Returns:
        A tuple with (`name`, `version`, `codename`)
    """
    distro: Optional[Dict[str, str]] = _parse_lsb_release()
    if distro:
        return (
            distro.get("distrib_id", ""),
            distro.get("distrib_release", ""),
            distro.get("distrib_codename", ""),
        )

    distro = _parse_lsb_release_command()
    if distro:
        return (
            distro.get("distributor_id", ""),
            distro.get("release", ""),
            distro.get("codename", ""),
        )

    distro = _parse_os_release()
    if distro:
        return (
            distro.get("name", ""),
            distro.get("version_id", ""),
            distro.get("version_codename", ""),
        )

    return ("", "", "")
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