相关疑难解决方法(0)

import pandas as pd
date_stngs = ('2008-12-20','2008-12-21','2008-12-22','2008-12-23')

a = pd.Series(range(4),index = (range(4)))

for idx, date in enumerate(date_stngs):
    a[idx]= pd.to_datetime(date)

此代码位产生错误:

TypeError:"'int'对象不可迭代"

谁能告诉我如何将这一系列日期时间字符串作为DateTime对象添加到DataFrame中？