How to add all list items to another list

Question

Possible duplicate:
Merge two lists in python?

How can I add list items to another list?

A = ['1', '2'] B = ['3', '4'] A.append(B) print A

returns

 ['1', '2', ['3', '4']]

How can I do it

 ['1', '2', '3', '4']?

+6

ewhitt May 12, '12 at 0:17

3 answers

list.extend , for example, in your case A.extend(B) .

+1

Cat plus plus May 12, '12 at 0:18

it can also be done as

 for s in B: A.append(B)

Of course, A.extend(B) does the same job, but using append , we need to add to the above f

-2

kiranmai May 12, '12 at 3:31

kindall · Accepted Answer · 2012-05-12T00:18:59+0000

 A.extend(B)

or

 A += B

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