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            <h1 id="seo-header">raspios下载</h1>
            
            
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                <p>第一步,从<a target="_blank" rel="noopener" href="https://www.raspberrypi.org/downloads/raspbian/">官网</a>获得下载地址<br>第二步,进入AriaNg添加下载:<br><code>http://downloads.raspberrypi.org/raspios_full_armhf/images/raspios_full_armhf-2020-05-28/2020-05-27-raspios-buster-full-armhf.zip</code><br>第三步,从Nextcloud获得下载地址和header</p>
<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><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span 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class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br></pre></td><td class="code"><pre><code class="hljs python"><span class="hljs-keyword">import</span> asyncio, os<br><span class="hljs-keyword">from</span> aiohttp <span class="hljs-keyword">import</span> ClientSession<br><span class="hljs-keyword">from</span> tqdm <span class="hljs-keyword">import</span> tqdm<br>ncols = <span class="hljs-number">80</span><br><br><span class="hljs-comment"># proxy = &#x27;http://your_user:your_password@your_proxy_url:your_proxy_port&#x27;</span><br><br>_ssl = <span class="hljs-literal">None</span><br><span class="hljs-comment">#_ssl = &#123;&#x27;verify_ssl&#x27;:False&#125;</span><br><span class="hljs-keyword">if</span> <span class="hljs-keyword">not</span> _ssl:<br>    <span class="hljs-keyword">import</span> ssl<br>    FORCED_CIPHERS = (<br>    <span class="hljs-string">&#x27;ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+HIGH:&#x27;</span><br>    <span class="hljs-string">&#x27;DH+HIGH:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+HIGH:RSA+3DES&#x27;</span><br>    )<br>    sslcontext = ssl.create_default_context()<br>    sslcontext.options = ssl.OP_NO_SSLv3<br>    sslcontext.options = ssl.OP_NO_SSLv2<br>    sslcontext.options = ssl.OP_NO_TLSv1_1<br>    sslcontext.options = ssl.OP_NO_TLSv1_2<br>    sslcontext.options = ssl.OP_NO_TLSv1_3<br>    sslcontext.set_ciphers(FORCED_CIPHERS)<br>    _ssl= &#123;<span class="hljs-string">&#x27;ssl&#x27;</span>:sslcontext&#125;<br><br><span class="hljs-keyword">if</span> os.name == <span class="hljs-string">&#x27;nt&#x27;</span>:<br>    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())<br><br><span class="hljs-keyword">async</span> <span class="hljs-keyword">def</span> <span class="hljs-title function_">_dl2f</span>(<span class="hljs-params">req, p, block_size, pbar, m=<span class="hljs-string">&#x27;ab&#x27;</span></span>):<br>    chunk = <span class="hljs-keyword">await</span> req.content.read(block_size)<br>    <span class="hljs-keyword">with</span> _fopen(p, m) <span class="hljs-keyword">as</span> file:<br>        <span class="hljs-keyword">while</span> chunk:<br>            pbar.update(file.write(chunk))<br>            chunk = <span class="hljs-keyword">await</span> req.content.read(block_size)<br><br><span class="hljs-keyword">async</span> <span class="hljs-keyword">def</span> <span class="hljs-title function_">_dl</span>(<span class="hljs-params">url, session, proxy, start, end, p, block_size, pbar</span>):<br>    <span class="hljs-keyword">if</span> start &gt; end:<br>        <span class="hljs-keyword">return</span><br>    <span class="hljs-keyword">async</span> <span class="hljs-keyword">with</span> session.get(url, headers=&#123;<span class="hljs-string">&#x27;Range&#x27;</span>: <span class="hljs-string">f&quot;bytes=<span class="hljs-subst">&#123;start&#125;</span>-<span class="hljs-subst">&#123;end&#125;</span>&quot;</span>&#125;, proxy=proxy , **_ssl) <span class="hljs-keyword">as</span> req:<br>        <span class="hljs-keyword">await</span> _dl2f(req, p, block_size, pbar)<br><br><span class="hljs-keyword">class</span> <span class="hljs-title class_">_pbar</span>(<span class="hljs-title class_ inherited__">object</span>):<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">__init__</span>(<span class="hljs-params">self, dec, unit=<span class="hljs-string">&#x27;B&#x27;</span></span>):<br>        self.dec = dec<br>        self.total = <span class="hljs-number">0</span><br>        self.unit = unit<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">update</span>(<span class="hljs-params">self, size</span>):<br>        self.total += size<br>        <span class="hljs-built_in">print</span>(<span class="hljs-string">f&#x27;<span class="hljs-subst">&#123;self.dec&#125;</span>: <span class="hljs-subst">&#123;self.total&#125;</span><span class="hljs-subst">&#123;self.unit&#125;</span>&#x27;</span>, end=<span class="hljs-string">&#x27;\r&#x27;</span>, flush=<span class="hljs-literal">True</span>)<br><br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_len</span>(<span class="hljs-params">Response</span>):<br>    <span class="hljs-comment">#print (Response.headers)</span><br>    <span class="hljs-keyword">return</span> <span class="hljs-built_in">int</span>(Response.headers.get(<span class="hljs-string">&#x27;content-length&#x27;</span>,-<span class="hljs-number">1</span>))<br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_path</span>(<span class="hljs-params">name</span>):<br>    p =  os.path.join(os.getcwd(),name)<br>    <span class="hljs-keyword">if</span> <span class="hljs-keyword">not</span> os.path.exists(p):<br>        os.mkdir(p)<br>    <span class="hljs-keyword">return</span> p<br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_fs</span>(<span class="hljs-params">name, <span class="hljs-built_in">id</span></span>):<br>    p = os.path.join(_path(name),<span class="hljs-built_in">str</span>(<span class="hljs-built_in">id</span>))<br>    <span class="hljs-keyword">return</span> <span class="hljs-built_in">int</span>(os.path.exists(p) <span class="hljs-keyword">and</span> os.path.getsize(p))   <br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_BytesIO</span>(<span class="hljs-params">name, <span class="hljs-built_in">id</span></span>):<br>    <span class="hljs-keyword">return</span> os.path.join(_path(name),<span class="hljs-built_in">str</span>(<span class="hljs-built_in">id</span>))<br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_fopen</span>(<span class="hljs-params">p, m</span>):<br>    <span class="hljs-keyword">return</span> <span class="hljs-built_in">open</span>(p, m)<br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_listdir</span>(<span class="hljs-params">name</span>):<br>    p = _path(name)<br>    <span class="hljs-keyword">return</span> [os.path.join(p,f) <span class="hljs-keyword">for</span> f <span class="hljs-keyword">in</span> <span class="hljs-built_in">sorted</span>(os.listdir(p), key = <span class="hljs-built_in">int</span>)]<br><br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_task_one</span>(<span class="hljs-params"><span class="hljs-built_in">id</span>, start, end, name, pbar</span>):<br>    s = _fs(name, <span class="hljs-built_in">id</span>)<br>    start += s<br>    pbar.update(s)<br>    <span class="hljs-keyword">if</span> start &lt;= end:<br>        file = _BytesIO(name, <span class="hljs-built_in">id</span>)<br>    <span class="hljs-keyword">else</span>:<br>        file = <span class="hljs-literal">None</span><br>    <span class="hljs-keyword">return</span> (start,end,file)<br><br><span class="hljs-keyword">def</span> <span class="hljs-title function_">_task_split</span>(<span class="hljs-params">size, task_size, name, pbar</span>):<br>    <span class="hljs-keyword">if</span> size &lt;= task_size:<br>        <span class="hljs-keyword">return</span> [_task_one(<span class="hljs-number">0</span>,<span class="hljs-number">0</span>,size-<span class="hljs-number">1</span>,name, pbar)]<br>    t = [(<span class="hljs-built_in">id</span>,s,s+task_size-<span class="hljs-number">1</span>) <span class="hljs-keyword">for</span> <span class="hljs-built_in">id</span>,s <span class="hljs-keyword">in</span> <span class="hljs-built_in">enumerate</span>(<span class="hljs-built_in">range</span>(<span class="hljs-number">0</span>,size,task_size))]<br>    td = t[-<span class="hljs-number">1</span>]<br>    t[-<span class="hljs-number">1</span>] = (td[<span class="hljs-number">0</span>],td[<span class="hljs-number">1</span>],size-<span class="hljs-number">1</span>)<br>    <span class="hljs-keyword">return</span> [_task_one(<span class="hljs-built_in">id</span>,s,e,name, pbar) <span class="hljs-keyword">for</span> <span class="hljs-built_in">id</span>,s,e <span class="hljs-keyword">in</span> t]<br><br><span class="hljs-keyword">class</span> <span class="hljs-title class_">downloader</span>(<span class="hljs-title class_ inherited__">object</span>):<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">__init__</span>(<span class="hljs-params">self, url, block_size=<span class="hljs-number">1024</span>, task_size=<span class="hljs-number">1048576</span>, name=<span class="hljs-string">&#x27;Downloading&#x27;</span>, loop=<span class="hljs-literal">None</span></span>):<br>        <span class="hljs-keyword">if</span> url <span class="hljs-keyword">and</span> <span class="hljs-built_in">len</span>(url[<span class="hljs-number">0</span>])==<span class="hljs-number">3</span>:<br>            self.url = url<br>        <span class="hljs-keyword">else</span>:<br>            <span class="hljs-keyword">raise</span> ValueError(<span class="hljs-string">&#x27;URL must include [(url, headers, proxy)]&#x27;</span>)<br>        self.block_size = block_size<br>        self.task_size = task_size<br>        self.name = name<br>        self._<span class="hljs-built_in">len</span> = <span class="hljs-literal">None</span><br>        <span class="hljs-keyword">if</span> loop:<br>            self.loop = loop<br>        <span class="hljs-keyword">else</span>:<br>            self.loop = asyncio.get_event_loop()<br>    <span class="hljs-keyword">async</span> <span class="hljs-keyword">def</span> <span class="hljs-title function_">len</span>(<span class="hljs-params">self, session</span>):<br>        <span class="hljs-keyword">if</span> <span class="hljs-keyword">not</span> self._<span class="hljs-built_in">len</span>:<br>            <span class="hljs-keyword">async</span> <span class="hljs-keyword">with</span> session.get(self.url[<span class="hljs-number">0</span>][<span class="hljs-number">0</span>], proxy=self.url[<span class="hljs-number">0</span>][<span class="hljs-number">2</span>], **_ssl) <span class="hljs-keyword">as</span> r:<br>                self._<span class="hljs-built_in">len</span> = _<span class="hljs-built_in">len</span>(r)<br>                <span class="hljs-keyword">if</span> self._<span class="hljs-built_in">len</span> == -<span class="hljs-number">1</span>:<br>                    <span class="hljs-keyword">await</span> _dl2f(r, _BytesIO(self.name,<span class="hljs-number">0</span>), self.block_size, _pbar(<span class="hljs-string">f&#x27;Unable to resume <span class="hljs-subst">&#123;self.name&#125;</span>&#x27;</span>), <span class="hljs-string">&#x27;wb&#x27;</span>)<br>        <span class="hljs-keyword">return</span> self._<span class="hljs-built_in">len</span><br>    <span class="hljs-keyword">async</span> <span class="hljs-keyword">def</span> <span class="hljs-title function_">_next</span>(<span class="hljs-params">self, s, u</span>):<br>        <span class="hljs-keyword">while</span> self._task:<br>            t = self._task.pop()<br>            <span class="hljs-keyword">await</span> _dl(u[<span class="hljs-number">0</span>],s,u[<span class="hljs-number">2</span>],t[<span class="hljs-number">0</span>],t[<span class="hljs-number">1</span>],t[<span class="hljs-number">2</span>],self.block_size,self._pbar)<br>    <span class="hljs-keyword">async</span> <span class="hljs-keyword">def</span> <span class="hljs-title function_">fetch</span>(<span class="hljs-params">self</span>):<br>        se = [ClientSession(headers=h) <span class="hljs-keyword">for</span> u,h,p <span class="hljs-keyword">in</span> self.url]<br>        size = <span class="hljs-keyword">await</span> self.<span class="hljs-built_in">len</span>(se[<span class="hljs-number">0</span>])<br>        <span class="hljs-keyword">if</span> size &lt;= <span class="hljs-number">0</span>:<br>            <span class="hljs-keyword">await</span> asyncio.wait([s.close() <span class="hljs-keyword">for</span> s <span class="hljs-keyword">in</span> se])<br>            <span class="hljs-keyword">return</span> size<br>        self._pbar = tqdm(total=size,initial=<span class="hljs-number">0</span>,unit=<span class="hljs-string">&#x27;B&#x27;</span>,unit_scale=<span class="hljs-literal">True</span>, desc=self.name, ncols=ncols)<br>        self._task = _task_split(size, self.task_size, self.name, self._pbar)<br>        <span class="hljs-keyword">await</span> asyncio.wait([self._<span class="hljs-built_in">next</span>(s,u) <span class="hljs-keyword">for</span> s,u <span class="hljs-keyword">in</span> <span class="hljs-built_in">zip</span>(se, self.url)])<br>        self._pbar.close()<br>        <span class="hljs-keyword">await</span> asyncio.wait([s.close() <span class="hljs-keyword">for</span> s <span class="hljs-keyword">in</span> se])<br>        <span class="hljs-keyword">return</span> size<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">start</span>(<span class="hljs-params">self</span>): <br>        self.loop.run_until_complete(self.fetch())<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">close</span>(<span class="hljs-params">self</span>):<br>        self.loop.close()<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">save</span>(<span class="hljs-params">self, file=<span class="hljs-literal">None</span>, Clear=<span class="hljs-literal">True</span></span>):<br>        <span class="hljs-keyword">if</span> <span class="hljs-keyword">not</span> file:<br>            file = <span class="hljs-built_in">open</span>(_path(self.name)+<span class="hljs-string">&#x27;.data&#x27;</span>,<span class="hljs-string">&#x27;wb&#x27;</span>)<br>        <span class="hljs-keyword">for</span> p <span class="hljs-keyword">in</span> tqdm(_listdir(self.name), ncols=ncols, desc=<span class="hljs-string">f&#x27;save <span class="hljs-subst">&#123;self.name&#125;</span>&#x27;</span>):<br>            <span class="hljs-keyword">with</span> <span class="hljs-built_in">open</span>(p,<span class="hljs-string">&#x27;rb&#x27;</span>) <span class="hljs-keyword">as</span> f:<br>                file.write(f.read())<br>        file.close()<br>        <span class="hljs-keyword">if</span> Clear:<br>            self.clear()<br>    <span class="hljs-keyword">def</span> <span class="hljs-title function_">clear</span>(<span class="hljs-params">self</span>):<br>        <span class="hljs-keyword">for</span> p <span class="hljs-keyword">in</span> tqdm(_listdir(self.name), ncols=ncols, desc=<span class="hljs-string">f&#x27;clear <span class="hljs-subst">&#123;self.name&#125;</span>&#x27;</span>):<br>            os.remove(p)<br><br><br><span class="hljs-keyword">if</span> __name__ == <span class="hljs-string">&quot;__main__&quot;</span>:<br>    u1 = <span class="hljs-string">r&#x27;https://保密/webdav/保密/2020-05-27-raspios-buster-full-armhf.zip?downloadStartSecret=保密&#x27;</span><br>    headers1 = &#123;<br>    <span class="hljs-string">&quot;Accept&quot;</span>: <span class="hljs-string">&quot;text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9&quot;</span>,<br>    <span class="hljs-string">&quot;Accept-Encoding&quot;</span>: <span class="hljs-string">&quot;gzip, deflate, br&quot;</span>,<br>    <span class="hljs-string">&quot;Accept-Language&quot;</span>: <span class="hljs-string">&quot;zh-CN,zh;q=0.9,en;q=0.8&quot;</span>,<br>    <span class="hljs-string">&quot;Authorization&quot;</span>: <span class="hljs-string">&quot;&quot;</span>,<br>    <span class="hljs-string">&quot;Connection&quot;</span>: <span class="hljs-string">&quot;keep-alive&quot;</span>,<br>    <span class="hljs-string">&quot;Cookie&quot;</span>: <span class="hljs-string">&quot;&quot;</span>,<br>    <span class="hljs-string">&quot;Host&quot;</span>: <span class="hljs-string">&quot;limour.top&quot;</span>,<br>    <span class="hljs-string">&quot;Sec-Fetch-Dest&quot;</span>: <span class="hljs-string">&quot;document&quot;</span>,<br>    <span class="hljs-string">&quot;Sec-Fetch-Mode&quot;</span>: <span class="hljs-string">&quot;navigate&quot;</span>,<br>    <span class="hljs-string">&quot;Sec-Fetch-Site&quot;</span>: <span class="hljs-string">&quot;same-origin&quot;</span>,<br>    <span class="hljs-string">&quot;Sec-Fetch-User&quot;</span>: <span class="hljs-string">&quot;?1&quot;</span>,<br>    <span class="hljs-string">&quot;Upgrade-Insecure-Requests&quot;</span>: <span class="hljs-string">&quot;1&quot;</span>,<br>    <span class="hljs-string">&quot;User-Agent&quot;</span>: <span class="hljs-string">&quot;Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36&quot;</span><br>    &#125;<br>    u2=<span class="hljs-string">r&#x27;http://downloads.raspberrypi.org/raspios_full_armhf/images/raspios_full_armhf-2020-05-28/2020-05-27-raspios-buster-full-armhf.zip&#x27;</span><br>    headers2 = &#123;<br>    <span class="hljs-string">&quot;user-agent&quot;</span>: <span class="hljs-string">&quot;Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36&quot;</span><br>    &#125;<br>    a = downloader([(u1, headers1, <span class="hljs-literal">None</span>),[u2, headers2, <span class="hljs-literal">None</span>]])<span class="hljs-comment">#同一个url重复则可以起到模拟多线程下载的效果,重复2次为2个连接</span><br>    a.start()<br></code></pre></td></tr></table></figure>

<p>等待下载完毕后使用a.save()保存</p>
<p><a target="_blank" rel="noopener" href="https://limour.lanzous.com/b015hqohg">https://limour.lanzous.com/b015hqohg</a> 密码:9xd4</p>

                
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