擅长:python、mysql、java
<p>如果有(或创建)单个字符串,则可以使用<strong>np.fromstring</strong>:</p>
<pre><code>import numpy as np
x = ["1.1", "2.2", "3.2"]
x = ','.join(x)
x = np.fromstring( x, dtype=np.float, sep=',' )
</code></pre>
<p>注意,<code>x = ','.join(x)</code>将x数组转换为字符串<code>'1.1, 2.2, 3.2'</code>。如果从txt文件中读取一行,则每一行都已经是一个字符串。</p>