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<div><span style=”color: #93a1a1; font-weight: bold;”>def</span> <span style=”color: #268bd2;”>email_valid</span>(email):</div>
<div> <span style=”color: #859900;”>if</span> <span style=”color: #2aa198;”>’@'</span> <span style=”color: #859900;”>in</span> email <span style=”color: #859900;”>and</span> <span style=”color: #2aa198;”>’.'</span> <span style=”color: #859900;”>in</span> email:</div>
<div> <span style=”color: #859900;”>if</span> <span style=”color: #2aa198;”>’@'</span> <span style=”color: #859900;”>!=</span> email[<span style=”color: #d33682;”>0</span>] <span style=”color: #859900;”>and</span> <span style=”color: #2aa198;”>’.'</span> <span style=”color: #859900;”>!=</span> email[<span style=”color: #268bd2;”>len</span>(email)<span style=”color: #859900;”>-</span><span style=”color: #d33682;”>1</span>] <span style=”color: #859900;”>and</span> email.index(<span style=”color: #2aa198;”>’@'</span>)<span style=”color: #859900;”>+</span><span style=”color: #d33682;”>1</span> <span style=”color: #859900;”>!=</span> email.index(<span style=”color: #2aa198;”>’.'</span>):</div>
<div> <span style=”color: #859900;”>return</span> <span style=”color: #b58900;”>True</span></div>
<div> <span style=”color: #859900;”>else</span>:</div>
<div> <span style=”color: #859900;”>return</span> <span style=”color: #b58900;”>False</span></div>
<div> <span style=”color: #859900;”>else</span>:</div>
<div> <span style=”color: #859900;”>return</span> <span style=”color: #b58900;”>False</span></div>
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