<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_buildout_config(buildout_filename):
 """Parse buildout config with zc.buildout ConfigParser """

    print("[localhost] get_buildout_config: {0:s}".format(buildout_filename))
    buildout = Buildout(buildout_filename, [('buildout', 'verbosity', '-100')])
    while True:
        try:
            len(buildout.items())
            break
        except OSError:
            pass
    return buildout