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<h2 id="首先贴上官方文档"><a href="#首先贴上官方文档" class="headerlink" title="首先贴上官方文档"></a>首先贴上官方文档</h2><p><a href="https://docs.python.org/2/library/json.html?highlight=json#module-json" target="_blank" rel="noopener">https://docs.python.org/2/library/json.html?highlight=json#module-json</a></p>
<h3 id="导入json包"><a href="#导入json包" class="headerlink" title="导入json包"></a>导入json包</h3><figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># -*- coding:utf-8 -*-</span></span><br><span class="line"><span class="keyword">import</span> json</span><br></pre></td></tr></table></figure>
<h3 id="函数的使用"><a href="#函数的使用" class="headerlink" title="函数的使用"></a>函数的使用</h3><h4 id="json-dumps"><a href="#json-dumps" class="headerlink" title="json.dumps"></a>json.dumps</h4><figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">dictData = {<span class="string">'a'</span>:<span class="number">1</span>, <span class="string">'b'</span>:<span class="number">2</span>}</span><br><span class="line">jsonData = json.dumps(dictData) <span class="comment"># dumps将数据对象转变为json格式</span></span><br><span class="line"><span class="keyword">print</span> jsonData</span><br></pre></td></tr></table></figure>
<pre><code>{"a": 1, "b": 2}
</code></pre><p>####json.loads</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">print</span> json.loads(jsonData) <span class="comment"># 与dumps相反，将json对象转变为字典对象返回</span></span><br></pre></td></tr></table></figure>
<pre><code>{u'a': 1, u'b': 2}
</code></pre><p>####json.dump</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">with</span> open(<span class="string">'test.json'</span>, <span class="string">'w'</span>) <span class="keyword">as</span> f:</span><br><span class="line"> json.dump(dictData, f) <span class="comment"># 将对象转变为json格式并存入文件中</span></span><br></pre></td></tr></table></figure>
<p>####json.load</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">with</span> open(<span class="string">'test.json'</span>) <span class="keyword">as</span> f:</span><br><span class="line"> <span class="keyword">print</span> json.load(f) <span class="comment"># 将json文件转变为字典返回</span></span><br></pre></td></tr></table></figure>
<pre><code>{u'a': 1, u'b': 2}
</code></pre><hr>
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