擅长:python、mysql、java
<p>对于问题1</p>
<p><code>thresh</code>参数表示:</p>
<blockquote>
<p>Require that many non-NA values.</p>
</blockquote>
<p>因此,如果您同时得到这两行,这意味着数据帧中没有非空值。你知道吗</p>
<p>我试过用你的测向仪在下面,它的工作。你知道吗</p>
<pre><code>In [527]: df
Out[527]:
ID GNDR COUNTRY BIKE CAR PBLC
0 1 0 NaN NaN NaN NaN
1 1 0 NaN NaN NaN NaN
In [528]: df = df.dropna()
Out[528]:
Empty DataFrame
Columns: [ID, GNDR, COUNTRY, BIKE, CAR, PBLC]
Index: []
</code></pre>