<p><strong>设置</strong>:</p>
<pre><code>df = pd.DataFrame({'B':[4,5,4,5,5,4],
'C':[7,8,9,4,2,3],
'D':[1,3,5,7,1,0],
'E':[5,3,6,9,2,4]})
print (df)
B C D E
0 4 7 1 5
1 5 8 3 3
2 4 9 5 6
3 5 4 7 9
4 5 2 1 2
5 4 3 0 4
</code></pre>
<p>用于<code>DataFrame</code>到{<cd2>}选择,例如按位置按<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.iloc.html" rel="nofollow noreferrer">^{<cd3>}</a>或按索引名称按<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.loc.html" rel="nofollow noreferrer">^{<cd4>}</a>:</p>
^{pr2}$
<p>对于<code>Series</code>到{<cd1>},如有必要,使用<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.to_frame.html" rel="nofollow noreferrer">^{<cd7>}</a>和转置:</p>
<pre><code>df = s.to_frame().T
print (df)
B C D E
0 4 7 1 5
</code></pre>
<p>从<code>DataFrame</code>删除列的最后一个使用<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.drop.html" rel="nofollow noreferrer">^{<cd9>}</a>:</p>
<pre><code>df = df.drop('B',axis=1)
print (df)
C D E
0 7 1 5
</code></pre>
<p>和来自<code>Series</code>的值使用<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.drop.html" rel="nofollow noreferrer">^{<cd11>}</a>:</p>
<pre><code>s = s.drop('C')
print (s)
B 4
D 1
E 5
Name: 0, dtype: int64
</code></pre>