我正在尝试使用python的pandas库创建一些分组数据的箱图。每个性别和pclass的输出应该是一个盒子图，总共6个。我的代码如下：
string但我收到了一个错误：
import pandas as pd
df = pd.DataFrame({"Age":[34,12,78,84,26,30],
"Sex":['Male','Female', 'Male','Female', 'Male','Female'],
"Pclass":[1,1,2,2,3,3],
"Survived":[0,0,0,1,1,1]})
df.groupby(['Sex','Pclass']).boxplot(column='Age', by='Survived')
这是一个错误还是我做错了什么？
我的pd.show_versions（）输出：
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
<ipython-input-3-4241a9c73bb3> in <module>()
6 "Survived":[0,0,0,1,1,1]})
7
----> 8 df.groupby(['Sex','Pclass']).boxplot(column='Age', by='Survived')
/home/leokury/anaconda2/lib/python2.7/site-packages/pandas/tools/plotting.pyc in boxplot_frame_groupby(grouped, subplots, column, fontsize, rot, grid, ax, figsize, layout, **kwds)
3110 rot=rot, grid=grid, **kwds)
3111 ax.set_title(pprint_thing(key))
-> 3112 ret.loc[key] = d
3113 fig.subplots_adjust(bottom=0.15, top=0.9, left=0.1,
3114 right=0.9, wspace=0.2)
/home/leokury/anaconda2/lib/python2.7/site-packages/pandas/core/indexing.pyc in __setitem__(self, key, value)
138 else:
139 key = com._apply_if_callable(key, self.obj)
--> 140 indexer = self._get_setitem_indexer(key)
141 self._setitem_with_indexer(indexer, value)
142
/home/leokury/anaconda2/lib/python2.7/site-packages/pandas/core/indexing.pyc in _get_setitem_indexer(self, key)
125
126 try:
--> 127 return self._convert_to_indexer(key, is_setter=True)
128 except TypeError as e:
129
/home/leokury/anaconda2/lib/python2.7/site-packages/pandas/core/indexing.pyc in _convert_to_indexer(self, obj, axis, is_setter)
1228 mask = check == -1
1229 if mask.any():
-> 1230 raise KeyError('%s not in index' % objarr[mask])
1231
1232 return _values_from_object(indexer)
KeyError: "['Female' 1] not in index"