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Qus: <p>What will be the output of the following Python code?</p><pre><span style="font-size: 14px;">x = 'abcd'<br></span><span style="font-size: 14px;">for i in x:<br></span><span style="font-size: 14px;">&nbsp; &nbsp; print(i)<br></span><span style="font-size: 14px;">&nbsp; &nbsp; x.upper()</span></pre>

Qus<p>निम्नलिखित Python कोड का आउटपुट क्या होगा?</p><pre style="font-size: 12.6px; letter-spacing: 0.14px;"><span style="font-size: 14px;">x = 'abcd'<br></span><span style="font-size: 14px;">for i in x:<br></span><span style="font-size: 14px;">&nbsp; &nbsp; print(i)<br></span><span style="font-size: 14px;">&nbsp; &nbsp; x.upper()</span></pre>


A. a B C D
B. a b c d
C. A B C D
D. error


Solution
B. a b c d



Explanation
Changes do not happen in-place, rather a new instance of the string is returned.
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