如何重用从iterrows接收的索引来创建另一个数据帧?

我遍历一个数据帧的行,并尝试使用从iterrows收到的相同索引重新创建另一个数据帧。我的问题是,该索引不被接受,我该怎么做?

for idx, row in df.iterrows:
    w = get_series(row)
    print(w)
    print(idx)
    df = pd.DataFrame([w], index=idx)

返回:

PPP     4.271205e-14
OOO     3.463379e-01
BBB     0.000000e+00
AAA     1.900294e-02
dtype: float64
2020-01-09 00:00:00+00:00

TypeError: Index(...) must be called with a collection of some kind, Timestamp('2020-01-09 00:00:00+0000', tz='UTC', freq='H') was passed