In [8]: cs=pd.Series([0.0014206, 0.0014267, 0.0014481, 0.0014968, 0.0015338, 0.001553 ,
...: 0.0015419, 0.0015932, 0.0016061, 0.0016428, 0.0015578, 0.0016377,
...: 0.0016215, 0.0015671, 0.0015631, 0.0015753, 0.0015723, 0.0015584,
...: 0.0015552, 0.0015157, 0.0015386, 0.0015448, 0.0015455, 0.001557 ,
...: 0.0015842, 0.0015893, 0.0016561, 0.0018115, 0.0018354, 0.0018405])
...: MyTT.BOLL(cs)
Out[8]:
(array([ nan, nan, nan, nan, nan, nan, nan, nan, nan,
nan, nan, nan, nan, nan, nan, nan, nan, nan,
nan, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002,
0.002, 0.002, 0.002]),
array([ nan, nan, nan, nan, nan, nan, nan, nan, nan,
nan, nan, nan, nan, nan, nan, nan, nan, nan,
nan, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002,
0.002, 0.002, 0.002]),
array([ nan, nan, nan, nan, nan, nan, nan, nan, nan,
nan, nan, nan, nan, nan, nan, nan, nan, nan,
nan, 0.001, 0.001, 0.001, 0.001, 0.002, 0.002, 0.002, 0.002,
0.001, 0.001, 0.001]))