我正在使用Python2.7。我正在学习熊猫并正在实施pivot_table。在实现pivot_table documentation中给出的示例时:
raw_data = {'A':['foo','foo','foo','foo','foo','bar','bar','bar','bar'],
'B':['one','one','one','two','two','one','one','two','two'],
'C':['small','large','large','small','small','large','small','small','large'],
'D':[1,2,2,3,3,4,5,6,7]}
df = pd.DataFrame(raw_data)
df.pivot_table(df,index = ['A','B'], values = 'D',columns = 'C', aggfunc = 'sum')
运行时,我收到以下错误: TypeError:pivot_table()获得了关键字参数'值'
的多个值有人能说出为什么会这样吗?
答案 0 :(得分:12)
您需要删除df
:
#here
df.pivot_table(df,index = ['A','B'], values = 'D',columns = 'C', aggfunc = 'sum')
a = df.pivot_table(index = ['A','B'], values = 'D',columns = 'C', aggfunc = 'sum')
print (a)
C large small
A B
bar one 4.0 5.0
two 7.0 6.0
foo one 4.0 1.0
two NaN 6.0