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我有一個熊貓數據幀如何扁了熊貓系列JSON字符串成一個數據幀
date_hour content
0 2016-10-17 00:00:00 [{"81": 0.0, "82": 0.0, "83": 0.0}]
1 2016-10-17 01:00:00 [{"81": 0.0, "82": 0.0, "83": 0.0}]
我想平df.content成這樣
81 82 83
2016-10-17 00:00:00 0 0 0
2016-10-17 01:00:00 0 0 0
一個數據幀怎麼可以做到這一點?
我嘗試:
# work for one item, though I can concat them, but it's slow(I have each json of 7k k/v pairs), took 2.5s for each
pd.read_json(df.head(1).content.item(), orient='records')
是的,'str [0]'很好 – jezrael