擅长:python、mysql、java
<p>首先,您需要将字符串转换为float,您可以使用方法<a href="https://docs.python.org/3/library/functions.html#float" rel="nofollow noreferrer">^{<cd1>}</a>
然后使用方法<a href="https://docs.python.org/3/library/functions.html#format" rel="nofollow noreferrer">^{<cd2>}</a>将格式添加到数字中</p>
<p>您可以尝试以下代码:</p>
<pre class="lang-py prettyprint-override"><code>price = ["9.8", "8.8" ,"10.9", "11.8", "13.9", "18.9"]
price_f = []
for i in price:
new_price_float=format(float(i),'.2f')
price_f.append(new_price_float)
print(price_f)
</code></pre>