只保留未中断的组

def keep_uninterrupted_groups(data, threshold=1):
    """
    data: List of tuples [(timestamp1, value1), (timestamp2, value2), ...]
    threshold: Time threshold to consider a group as interrupted
    """
    if not data:
        return []

    data.sort(key=lambda x: x[0])  # Sort by timestamp
    groups = []
    current_group = [data[0]]

    for i in range(1, len(data)):
        prev_ts, _ = data[i - 1]
        curr_ts, _ = data[i]
        if curr_ts - prev_ts <= threshold:
            current_group.append(data[i])
        else:
            if len(current_group) > 1:  # Only keep groups with more than one item
                groups.append(current_group)
            current_group = [data[i]]

    if len(current_group) > 1:  # Add the last group if it's valid
        groups.append(current_group)

    return groups