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                            w.tdaysOffset(offset, beginTime, options)

用于將基準日期前推若干周期得到符合選定日期類型的日期

參數說明
![](https://img.kancloud.cn/07/f2/07f2be7f9c87218232191086ce4442a7_1100x150.png)
集成在options中的參數
options以字符串的形式集成了多個參數。以下列舉了一些常用的參數：
![](https://img.kancloud.cn/01/4a/014a32bbae3626ee78e322601629aae6_641x299.png)
示例說明
# 取從今天往前推10個月的日歷日
import datetime
today = datetime.date.today() 
w.tdaysoffset(-10, today.isoformat(), "Period=M;Days=Alldays")
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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