<p>인터넷에서 코루틴에 관한 내용들을 찾아보니</p>
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<div><span style="color: #569cd6;">def</span>&nbsp;<span style="color: #dcdcaa;">number_coroutine</span>():</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">while</span>&nbsp;<span style="color: #569cd6;">True</span>:</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">x</span>&nbsp;=&nbsp;(<span style="color: #c586c0;">yield</span>)</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">print</span>(<span style="color: #9cdcfe;">x</span>)</div>
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<div><span style="color: #9cdcfe;">co</span>&nbsp;=&nbsp;<span style="color: #dcdcaa;">number_coroutine</span>()</div>
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<div><span style="color: #dcdcaa;">next</span>(<span style="color: #9cdcfe;">co</span>)</div>
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<div><span style="color: #9cdcfe;">co</span>.<span style="color: #dcdcaa;">send</span>(<span style="color: #b5cea8;">1</span>)</div>
<div><span style="color: #9cdcfe;">co</span>.<span style="color: #dcdcaa;">send</span>(<span style="color: #b5cea8;">2</span>)&nbsp;</div>
<div><span style="color: #9cdcfe;">co</span>.<span style="color: #dcdcaa;">send</span>(<span style="color: #b5cea8;">123</span>)</div>
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<p>위의 예시처럼 yield를 괄호 안에 넣는 경우가 대부분이었는데요..</p>
<p>괄호를 표시해 주는 것이 필수는 아닌건가요?</p>

인프런 커뮤니티 질문&답변

코루틴에서 yield의 사용