擅长:python、mysql、java
<p>主程序中的<code>print()</code>应该是一个简单的函数调用。<code>None</code>是指<code>print</code>显示函数的返回值,但函数没有返回值<code>None</code>是默认值。该函数执行您想要的所有打印操作</p>
<pre><code>a = input("What is you're height in metres?")
height = int(a)
b = input("What is you're weight in kilograms?")
weight = int(b)
bmi_calculator(height, weight)
</code></pre>