parameters: (self, lines)
return_statement: return lines
docstring: PADS lines with space to center align them
          lines : list of text-lines.
docstring_summary: PADS lines with space to center align them
          lines : list of text-lines.
docstring_tokens: PADS lines with space to center align them lines : list of text - lines .
function: def center_align(self, lines):
          """
          PADS lines with space to center align them
          lines : list of text-lines.
          """
          ls = [len(l) for l in lines]
          max_l = max(ls)
          for i in xrange(len(lines)):
              l = lines[i].strip()
              dl = max_l-ls[i]
              lspace = dl//2
              rspace = dl-lspace
              lines[i] = ' '*lspace+l+' '*rspace
          return lines
function_tokens: def center_align ( self , lines ) : ls = [ len ( l ) for l in lines ] max_l = max ( ls ) for i in xrange ( len ( lines ) ) : l = lines [ i ] . strip ( ) dl = max_l - ls [ i ] lspace = dl // 2 rspace = dl - lspace lines [ i ] = ' ' * lspace + l + ' ' * rspace return lines