def install_using_pip(requirements_file):
    """Install pip libraries as mentioned in a requirements file.

    :param requirements_file: (~str) Path to requirements file - in which libraries are listed.

    :return: True - if installation successful, and False if not.
    """
    # Instead of using file directly with pip which can crash because of single library
    return run_command("sudo -E pip2 install --upgrade -r %s" + requirements_file)
dataset/ETHPy150Open owtf/owtf/install/install.py/install_using_pip/operator `%` -> `+`