擅长:python、mysql、java
<p>如果您碰巧也在使用pandas,那么可以使用<a href="https://pandas.pydata.org/pandas-docs/stable/generated/pandas.to_numeric.html" rel="noreferrer">^{<cd1>}</a>方法:</p>
<pre><code>In [1]: import numpy as np
In [2]: import pandas as pd
In [3]: x = np.array(['1', '2', 'a'])
In [4]: pd.to_numeric(x, errors='coerce')
Out[4]: array([ 1., 2., nan])
</code></pre>