擅长:python、mysql、java
<p>您可以将<code>re</code>模块用于此模式:</p>
<pre><code>data = [['2 Cups Fresh breadcrumbs'], ['1/3 Cup Parmesan cheese, grated'], ['For frying Vegetable Oil']]
pattern = '([0-9].*?)?\s(.*)'
[[item for found in re.findall(pattern, i[0]) for item in found] for i in data]
#[['2', 'Cups Fresh breadcrumbs'], ['1/3', 'Cup Parmesan cheese, grated'], ['','For frying Vegetable Oil']]
</code></pre>