from typing import Tuple
import re


def split_package_version(package: str) -> Tuple[str, ...]:
    """Split the package which maybe contains version info.

    Args:
        package (str): Name of package to split.

    Example:
        >>> split_package_version('mmcls')
        'mmcls', ''
        >>> split_package_version('mmcls=0.11.0')
        'mmcls', '0.11.0'
        >>> split_package_version('mmcls==0.11.0')
        'mmcls', '0.11.0'
    """
    if '=' in package:
        return tuple(re.split(r'=+', package))
    else:
        return package, ''