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從源我檢索一些JSON格式的數據。我想將這些數據(時間測量值)保存爲文本文件。反覆地,我想要使用相同的信號源並查看是否有新的測量結果,如果有的話,我想將其添加到其他測量結果中。timestamp字符串(Unix時間)datetime或pandas.Timestamp
我得到的數據是這樣的:
{"xyz":[{"unixtime":"1458255600","time":"00:00","day":"18\/03","value":"11","paramlabel":"30-500 mHz","popupcorr":"550","iconnr":"7","paramname":"30-500 mHz"},{"unixtime":"1458256200","time":"00:10","day":"18\/03","value":"14","paramlabel":"30-500 mHz","popupcorr":"550","iconnr":"7","paramname":"30-500 mHz"},etc.]}
我這個數據加載到數據幀的大熊貓,能夠更容易地與它的工作。但是,當我將它加載到數據框中時,所有列都被視爲字符串。我怎樣才能確保unixtime列被視爲時間戳(這樣我可以轉換爲日期時間)?