def convertSliceToText(slice):
    """Convert tuple slice into text."""
    if slice is None:
        return ''
    out = []
    for spart in slice:
        if isinstance(spart, int):
            out.append(str(spart))
            continue
        sparttxt = []
        for p in spart:
            if p is not None:
                sparttxt.append(str(p))
            else:
                sparttxt.append('')
        if sparttxt[-1] == '':
            del sparttxt[-1]
        out.append(':'.join(sparttxt))
    return ', '.join(out)
