nd sums:
</span></span><span style="display:flex;"><span>go mod tidy
</span></span></code></pre></div><ul>
<li>这时可以看到目录下多了一个 <code>go.mod</code> 文件，其中内容如下</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>$ cat go.mod
</span></span><span style="display:flex;"><span>module helloworld
</span></spa