list - Python Merge line with 1 entry with next line -

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with output like...

['aaa', 'bbb', 'ccc', 'ddd'] ['aaa'] ['bbb', 'ccc', 'ddd'] ['aaa', 'bbb', 'ccc', 'ddd'] ['aaa', 'bbb', 'ccc', 'ddd']

i want merge single element aaa next line bbb ccc ddd form: aaa bbb ccc ddd.

my current code is

   s in my_input_string.split('\n'):        s = ' '.join(s.split())        entries = s.split(" ")            if len(entries) < 2:               print entries           else:               print entries[2]

and return correct output until exception, first returns single element, wrong entry, , printing wanted output yet again.

this want

l = [['aaa', 'bbb', 'ccc', 'ddd'],['aaa'],['bbb', 'ccc', 'ddd'],['aaa', 'bbb', 'ccc', 'ddd'],['aaa', 'bbb', 'ccc', 'ddd']] in range(0,len(l)):     if(len(l[i]) < 2):         l[i] = l[i] + l[i+1] print l

you need concatenate next list if length <2


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