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df.loc[dates[0]]

#当然了显示的是按照Series那种形式

A 0.615859

B 0.354072

C 0.741003

D 0.055112

Name: 2013-01-01 00:00:00, dtype: float64

# 按标签选择多轴

df.loc[:,['A','B']]

A B

2013-01-01 0.615859 0.354072

2013-01-02 0.985261 0.017241

2013-01-03 0.104701 0.647015

2013-01-04 0.252073 0.862004

2013-01-05 0.079194 0.779128

2013-01-06 0.790942 0.906111

# 显示标签切片 ，两个端点包括

df.loc['20130102':'20130104',['A','C']]

A C

2013-01-02 0.985261 0.481214

2013-01-03 0.104701 0.812034

2013-01-04 0.252073 0.063743

# 减少返回对象得尺寸

df.loc['20130102',['A','B']]

A 0.985261

B 0.017241

Name: 2013-01-02 00:00:00, dtype: float64

# 获取标量值

df.loc[dates[0],'A']

0.6158587390352868

df.loc['20130101','A']

0.6158587390352868