import pkg_resources


def check_package_installed(package_name):
    """
    Uses pkg_resources.require to certify that a package is installed
    
    :param package_name: name of package
    :type package_name: str
    :return: boolean value whether or not package is installed in current python env
    :rtype: bool
    """
    try:
        pkg_resources.require(package_name)
    except pkg_resources.DistributionNotFound:
        return False

    return True