大熊猫重塑 - 在列移到行值各个列

Question

我有以下数据框：

City dt Stat1 
0 YYZ 2015-12-31 -562.14 
1 YYZ 2016-01-31 -701.18 
2 YYZ 2016-02-29 -265.44 
3 YYZ 2016-03-31 -42.62 
4 YYZ 2016-04-30 -468.95 
5 YYZ 2016-05-31 -549.94 
6 YYZ 2016-06-30 80.84 
7 YYZ 2016-07-31 -633.36 
8 YYZ 2016-08-31 -1700.73 
9 YYZ 2016-09-30 -229.40 
10 YYZ 2016-10-31 996.27 
11 YYZ 2016-11-30 117.01 

{'City': {0: 'YYZ', 
    1: 'YYZ', 
    2: 'YYZ', 
    3: 'YYZ', 
    4: 'YYZ', 
    5: 'YYZ', 
    6: 'YYZ', 
    7: 'YYZ', 
    8: 'YYZ', 
    9: 'YYZ', 
    10: 'YYZ', 
    11: 'YYZ'}, 
'dt': {0: Timestamp('2015-12-31 00:00:00'), 
    1: Timestamp('2016-01-31 00:00:00'), 
    2: Timestamp('2016-02-29 00:00:00'), 
    3: Timestamp('2016-03-31 00:00:00'), 
    4: Timestamp('2016-04-30 00:00:00'), 
    5: Timestamp('2016-05-31 00:00:00'), 
    6: Timestamp('2016-06-30 00:00:00'), 
    7: Timestamp('2016-07-31 00:00:00'), 
    8: Timestamp('2016-08-31 00:00:00'), 
    9: Timestamp('2016-09-30 00:00:00'), 
    10: Timestamp('2016-10-31 00:00:00'), 
    11: Timestamp('2016-11-30 00:00:00')}, 
'Stat1': {0: -562.13999999999999, 
    1: -701.18000000000029, 
    2: -265.43999999999994, 
    3: -42.620000000000012, 
    4: -468.9500000000001, 
    5: -549.94000000000005, 
    6: 80.840000000000032, 
    7: -633.36000000000013, 
    8: -1700.7300000000002, 
    9: -229.40000000000006, 
    10: 996.26999999999998, 
    11: 117.01000000000001}} 

我想在dt列各列移动值。

所以结果应该是这个样子：

City, 2015-12-31, 2016-01-31, ... 
YYZ 562.14, -701.18, ... 

Answer 1

与pivot重塑你的数据帧。

df.pivot(index='City', columns='dt', values='Stat1')