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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def begin_run_group(project):
 """ Begin a run_group in the database. A run_group groups a set of runs for a given project. This models a series of runs that form a complete binary runtime test. Args: project: The project we begin a new run_group for. Returns: ``(group, session)`` where group is the created group in the database and session is the database session this group lives in. """

    from benchbuild.utils.db import create_run_group
    from datetime import datetime

    group, session = create_run_group(project)
    group.begin = datetime.now()
    group.status = 'running'

    session.commit()
    return group, session