擅长:python、mysql、java
<p>您需要在<code>:</code>之后缩进。。。</p>
<pre><code>#!/usr/bin/env python3
def convert_temp(scale=None, source_temp=None):
if scale == "F":
return(source_temp - 32.0) * (5.0/9.0)
elif scale == "C":
return(source_temp * (9.0/5.0)) + 32.0
else:
print("Needs to be (F) or (C)!")
return
scale = input("Select (F) or (C): " )
source_temp = int(input("What is the temperature: " ))
m = convert_temp(scale, source_temp)
print(source_temp, "degrees", scale, "is", m, "degrees", scale)
</code></pre>