以CSV格式转换特定数据

Question

我有一个csv文件，如下所示：

Month     Day   Year  Tmax
   4       1    1912    56
   4       2    1912    56
   4       3    1912    74
   4       4    1912    82
   4       5    1912    79
   4       1    1913    73
   4       2    1913    60
   4       3    1913    67
   4       4    1913    81
   4       5    1913    77

我希望它看起来像这样：

Year  Month   1     2     3      4     5 
 1912   4     56     56    74     82    79
 1913   4     73     60    67     81    77

因此，每个Day现在都是列标题，Tmax显示为列而不是行。我已经玩过拆散和转置，但似乎无法得到它。任何帮助将不胜感激。

Answer 1

您可以将pd.pivot_table() index ['Year', 'Month'] columns 'Day' 'Tmax' In [10]: pd.pivot_table(df, values='Tmax', index=['Year', 'Month'], columns='Day') Out[10]: Day 1 2 3 4 5 Year Month 1912 4 56 56 74 82 79 1913 4 73 60 67 81 77 用于jsfiddle.net/gdc5ryqj/ 。

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