a = [1,2,3]
x=a.append(2009)
print (x)
Output is :
None
What is the main reason of it ?
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`append` returns None... – Andrew Li Oct 26 '16 at 20:40
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1The reason is that `append` modifies the list in place and returns None. Search to find gazillions of other questions about this on here. – BrenBarn Oct 26 '16 at 20:40