WEEK_VALUE = WEEK1 WEEK2 WEEK3 WEEK4 WEEK5 WEEK6 WEEK7plttitle周繁忙统计# 绘制饼图pltpieWEEK_VALUE labels=WEEK autopct=11fpltaxisequal # 使饼图长宽相等# 显示图例pltlegendloc=upper right fontsize=10 bbox_to_anchor=11 105

报错信息显示NameError: name 'get_week_number' is not defined，说明get_week_number函数没有定义。你需要在代码中定义get_week_number函数，以便在fmtj函数中调用它。可以尝试如下定义get_week_number函数：

def get_week_number(date):
    # 根据日期获取星期几的逻辑
    # ...
    return week_number

请根据你的业务逻辑实现get_week_number函数，并确保在调用它之前进行定义。