如何在fusiontime图表中显示7天的入库？

from fusioncharts import FusionCharts
from datetime import datetime, timedelta

data = []
start_date = datetime.now() - timedelta(days=6)
for i in range(7):
    date = start_date + timedelta(days=i)
    data.append({'label': date.strftime('%Y-%m-%d'), 'value': 0})

# 假设入库数据存储在一个名为inventory的列表中
for item in inventory:
    date = datetime.strptime(item['date'], '%Y-%m-%d')
    if start_date <= date <= datetime.now():
        index = (date - start_date).days
        data[index]['value'] += 1

chart = FusionCharts("timeseries", "myChart", "600", "400", "chart-container", "json",
                     {
                         "chart": {
                             "caption": "7-Day Inventory",
                             "subcaption": "Number of Items",
                             "xaxisname": "Date",
                             "yaxisname": "Count",
                             "theme": "fusion"
                         },
                         "data": data
                     })

chart.render()