pandas 补值

[zcsnbb]

1. "2018-10-24 16:35:00,201.6,201.6,201.6,201.6"
2. "2018-10-24 16:36:00,None,None,None,None"
3. "2018-10-24 16:37:00,201.6,201.6,201.6,201.6"
4. "2018-10-24 16:38:00,201.6,201.6,201.6,201.6"
5. "2018-10-24 16:39:00,201.6,201.6,201.6,201.6"
6. "2018-10-24 16:40:00,201.45,201.45,201.45,201.45"
7. "2018-10-24 16:41:00,201.5,201.5,201.5,201.5"
8. "2018-10-24 16:42:00,201.5,201.5,201.5,201.5"
9. "2018-10-24 16:43:00,201.5,201.5,201.5,201.5"
10. "2018-10-24 16:44:00,None,None,None,None" 我的 redis 中 zset 数据是这样的，值是一个一个的字符串 我将这些字符串取出，并进行循环遍历， 使用"，"分割，并放到两层嵌套的列表中 来转换为 dataframe data = [ [2018-10-24 16:42:00,201.5,201.5,201.5,201.5], [2018-10-24 16:42:00,201.5,201.5,201.5,201.5], [2018-10-24 16:42:00,201.5,201.5,201.5,201.5], ["2018-10-24 16:44:00,None,None,None,None"],] 当我使用 df = pd.DataFrame(data, dtype="float") df.fillna(method="bfill"，inplace=True) 但是尝试失败了，我认为可能是因为 None 是一个字符串而不是一个空对象，我要如何进行向前补植 感谢大家 指教

[crazycabbage]

df.replace("None", np.nan, inplace=True)


df.fillna(method="bfill")


替换后在 fill

[zcsnbb]

@crazycabbage 感谢 已解决