How to prepend all list elements into another list
list, python
Solution
A.extend(B)
or
A += B
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Problem
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']? ```