How to prepend all list elements into another list

Question

Possible Duplicate:
Merge two lists in python?

How can I prepend list elements into another list?

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

returns

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

How can I make it

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

score 12 · Accepted Answer · answered May 12 '12 at 00:18

12

A.extend(B)

or

A += B

This text added to let me post this answer.

answered May 12 '12 at 00:18

kindall

Is there another way to pad the anser with redundant text to meet the minimum-limit of the characters? – ovgolovin May 12 '12 at 00:52
I mean there was ``, but it seems not working anymore :) – ovgolovin May 12 '12 at 00:59

score 2 · Answer 2 · answered May 12 '12 at 00:18

2

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

answered May 12 '12 at 00:18

Cat Plus Plus

score -2 · Answer 3 · edited May 12 '12 at 03:35

-2

this can also be done as

for s in B: 
    A.append(B)

of course A.extend(B) does the same work but using append we need to add in the above f

edited May 12 '12 at 03:35

jamylak

answered May 12 '12 at 03:31

kiranmai

3 Answers3