实现传感器历史数据游标分页查询

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    readings_csv = open_url(____).read()
    readings = pd.read_csv(StringIO(____))
    PAGE_SIZE = ____
    def cursor_page(____):
        filtered = readings[(____)&(____)].sort_values(____)
        if cursor_ts is not None:
            filtered = filtered[filtered['____'] > cursor_ts]
        page = filtered.head(____)
        next_cursor = float(____) if len(____)==page_size else None
        return page[['____','____','____']].to_dict(____), next_cursor
    did = '____'; metric = '____'
    cursor = None; page_num = ____
    print("____" + did + "____" + metric + "____" + str(____) + "____")
    while True:
        items, next_cursor = cursor_page(____)
        if not items: break
        print("____" + str(____) + "____" + str(len(____)) + "____" + str(____))
        if next_cursor is None: break
        cursor = next_cursor; page_num += ____
        if page_num > ____: print(____); break