<div dir="ltr"><div style="color:rgb(204,204,204);background-color:rgb(31,31,31);font-family:Menlo,Monaco,"Courier New",monospace;font-size:12px;line-height:18px;white-space:pre"><div><span style="color:rgb(106,153,85)">#Code:</span></div><div><span style="color:rgb(197,134,192)">import</span> <span style="color:rgb(78,201,176)">itertools</span></div><div><span style="color:rgb(156,220,254)">a</span> <span style="color:rgb(212,212,212)">=</span> [[<span style="color:rgb(181,206,168)">1</span>, <span style="color:rgb(181,206,168)">2</span>], [<span style="color:rgb(181,206,168)">3</span>, <span style="color:rgb(181,206,168)">4</span>], [<span style="color:rgb(181,206,168)">5</span>, <span style="color:rgb(181,206,168)">6</span>]]</div><div><span style="color:rgb(156,220,254)">b</span> <span style="color:rgb(212,212,212)">=</span> <span style="color:rgb(78,201,176)">list</span>(<span style="color:rgb(78,201,176)">itertools</span>.<span style="color:rgb(78,201,176)">chain</span>.<span style="color:rgb(220,220,170)">from_iterable</span>(<span style="color:rgb(156,220,254)">a</span>))</div><div><span style="color:rgb(220,220,170)">print</span>(<span style="color:rgb(156,220,254)">b</span>)</div><br><div><span style="color:rgb(106,153,85)">#Output:</span></div><div>[<span style="color:rgb(181,206,168)">1</span>, <span style="color:rgb(181,206,168)">2</span>, <span style="color:rgb(181,206,168)">3</span>, <span style="color:rgb(181,206,168)">4</span>, <span style="color:rgb(181,206,168)">5</span>, <span style="color:rgb(181,206,168)">6</span>]</div></div></div>