在pandas.dataframe添加一行问题，怎么解决

Question

如题所述

Answer 1

#原始数据为2行3列，行标01，列标abc
df = pandas.DataFrame(numpy.random.randn(2, 3), columns=['a', 'b', 'c'])
#增加一列d
df['d'] = pandas.Series(numpy.random.randn(len(df['a'])), index=df.index)
#增加一行2
df.ix[2] = pandas.Series(numpy.random.rand(4),index=df.columns)