<p>w3school 사이트에서 예제가 male에서 html로 바뀐 것 말고는 코드를 비교해봐도 문제가 없는데 계속 오류만 뜹니다.</p>
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<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">
<div><span style="color: #c586c0;">import</span>&nbsp;<span style="color: #4ec9b0;">time</span></div>
<div><span style="color: #c586c0;">from</span>&nbsp;<span style="color: #4ec9b0;">selenium</span>&nbsp;<span style="color: #c586c0;">import</span>&nbsp;<span style="color: #4ec9b0;">webdriver</span></div>
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<div><span style="color: #9cdcfe;">browser</span>&nbsp;=&nbsp;<span style="color: #4ec9b0;">webdriver</span>.<span style="color: #4ec9b0;">Chrome</span>()</div>
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<div><span style="color: #9cdcfe;">browser</span>.<span style="color: #dcdcaa;">get</span>(<span style="color: #ce9178;">'https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_input_type_radio'</span>)</div>
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<div><span style="color: #9cdcfe;">browser</span>.<span style="color: #9cdcfe;">switch_to</span>.<span style="color: #dcdcaa;">frame</span>(<span style="color: #ce9178;">'iframeResult'</span>)&nbsp;<span style="color: #6a9955;">#&nbsp;frame&nbsp;전환</span></div>
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<div><span style="color: #9cdcfe;">elem</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">browser</span>.<span style="color: #dcdcaa;">find_element_by_xpath</span>(<span style="color: #ce9178;">'//*[@id="html"]'</span>)&nbsp;<span style="color: #6a9955;">#&nbsp;성공</span></div>
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<div><span style="color: #9cdcfe;">elem</span>.click()</div>
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<div><span style="color: #9cdcfe;">browser</span>.<span style="color: #9cdcfe;">switch_to</span>.<span style="color: #dcdcaa;">default_content</span>()&nbsp;<span style="color: #6a9955;">#&nbsp;상위로&nbsp;빠져&nbsp;나옴</span></div>
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<div><span style="color: #9cdcfe;">elem</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">browser</span>.<span style="color: #dcdcaa;">find_element_by_xpath</span>(<span style="color: #ce9178;">'//*[@id="html"]'</span>)&nbsp;<span style="color: #6a9955;">#&nbsp;실패</span></div>
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<div><span style="color: #9cdcfe;">elem</span>.click()</div>
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<div><span style="color: #4ec9b0;">time</span>.<span style="color: #dcdcaa;">sleep</span>(<span style="color: #b5cea8;">5</span>)&nbsp;<span style="color: #6a9955;">#&nbsp;5초&nbsp;대기</span></div>
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<div><span style="color: #9cdcfe;">browser</span>.<span style="color: #dcdcaa;">quit</span>()</div>
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<p>제가 chromedriver.exe를 설치 안 해서 생긴 문제였습니다. 헤결됐습니다.</p>

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코드 실행이 안되고 계속 오류만 뜹니다