Python : Sequence data types in python

<p>निम्नलिखित Python कोड का आउटपुट क्या होगा?</p><pre class="de1" lucida="" console",="" monospace;="" color:="" rgb(51,="" 51,="" 51);="" word-break:="" break-all;="" overflow-wrap:="" normal;="" background:="" rgb(244,="" 244,="" 244);="" border:="" 0px;="" overflow:="" visible;="" box-shadow:="" none;="" text-align:="" justify;="" margin-top:="" 0px="" !important;="" margin-bottom:="" line-height:="" 20px="" !important;"="" style="font-size: 12.6px; letter-spacing: 0.14px; border-radius: 0px; padding: 0px;"> a=[1,2,3] b=a.append(4) print(a) print(b)</pre> , <p>What will be the output of the following Python code?</p> <pre class="de1" style="border-radius: 0px; padding: 0px; font-family: Consolas, Monaco, " lucida="" console",="" monospace;="" color:="" rgb(51,="" 51,="" 51);="" word-break:="" break-all;="" overflow-wrap:="" normal;="" background:="" rgb(244,="" 244,="" 244);="" border:="" 0px;="" overflow:="" visible;="" box-shadow:="" none;="" text-align:="" justify;="" margin-top:="" 0px="" !important;="" margin-bottom:="" line-height:="" 20px="" !important;"=""> <span style="font-size: 12.6px;">a=[1,2,3] b=a.append(4) print(a) print(b)</span></pre>

<p>निम्नलिखित Python कोड का आउटपुट क्या होगा?</p><pre class="de1" lucida="" console",="" monospace;="" color:="" rgb(51,="" 51,="" 51);="" word-break:="" break-all;="" overflow-wrap:="" normal;="" background:="" rgb(244,="" 244,="" 244);="" border:="" 0px;="" overflow:="" visible;="" box-shadow:="" none;="" text-align:="" justify;="" margin-top:="" 0px="" !important;="" margin-bottom:="" line-height:="" 20px="" !important;"="" style="font-size: 12.6px; letter-spacing: 0.14px; border-radius: 0px; padding: 0px;"> a=[1,2,3] b=a.append(4) print(a) print(b)</pre>

<p>What will be the output of the following Python code?</p> <pre class="de1" style="border-radius: 0px; padding: 0px; font-family: Consolas, Monaco, " lucida="" console",="" monospace;="" color:="" rgb(51,="" 51,="" 51);="" word-break:="" break-all;="" overflow-wrap:="" normal;="" background:="" rgb(244,="" 244,="" 244);="" border:="" 0px;="" overflow:="" visible;="" box-shadow:="" none;="" text-align:="" justify;="" margin-top:="" 0px="" !important;="" margin-bottom:="" line-height:="" 20px="" !important;"=""> <span style="font-size: 12.6px;">a=[1,2,3] b=a.append(4) print(a) print(b)</span></pre>
A. [1,2,3,4] [1,2,3,4]

B. [1, 2, 3, 4] None

C. Syntax error

D. [1,2,3] [1,2,3,4]



Correct Answer :

B. [1, 2, 3, 4] None



Explanation
Append function on lists doesn’t return anything. Thus the value of b is None.
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