- "2018-10-24 16:35:00,201.6,201.6,201.6,201.6"
- "2018-10-24 16:36:00,None,None,None,None"
- "2018-10-24 16:37:00,201.6,201.6,201.6,201.6"
- "2018-10-24 16:38:00,201.6,201.6,201.6,201.6"
- "2018-10-24 16:39:00,201.6,201.6,201.6,201.6"
- "2018-10-24 16:40:00,201.45,201.45,201.45,201.45"
- "2018-10-24 16:41:00,201.5,201.5,201.5,201.5"
- "2018-10-24 16:42:00,201.5,201.5,201.5,201.5"
- "2018-10-24 16:43:00,201.5,201.5,201.5,201.5"
- "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
2 条回复 • 2018-10-25 18:48:03 +08:00
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1
crazycabbage 2018 年 10 月 24 日  1
df.replace("None", np.nan, inplace=True)
df.fillna(method="bfill") 替换后在 fill |
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2
zcsnbb OP @crazycabbage 感谢 已解决
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