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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 _libvirt_creds():
    '''
    Returns the user and group that the disk images should be owned by
    '''
    g_cmd = 'grep ^\\s*group /etc/libvirt/qemu.conf'
    u_cmd = 'grep ^\\s*user /etc/libvirt/qemu.conf'
    try:
        stdout = subprocess.Popen(g_cmd,
                                  shell=True,
                                  stdout=subprocess.PIPE).communicate()[0]
        group = salt.utils.stringutils.to_str(stdout).split('"')[1]
    except IndexError:
        group = 'root'
    try:
        stdout = subprocess.Popen(u_cmd,
                                  shell=True,
                                  stdout=subprocess.PIPE).communicate()[0]
        user = salt.utils.stringutils.to_str(stdout).split('"')[1]
    except IndexError:
        user = 'root'
    return {'user': user, 'group': group}