<p>我犯的主要错误是</p>
<p>TypeError:不支持/:“str”和“int”的操作数类型</p>
<pre><code>#Name variables/imports. Ask usr for scale lengh and num of frets
import math
scalelenth = input ("please inter a number for scale \n > " )
constnum = 17.817
#Calculate Fret one distance
fretum = scalelenth / constnum
print("this is scale lenth %d " %scalelenth)
</code></pre>