comefrom: <qiyuangong>296_Best_Meeting_Point_4.py
code: def collectCols( grid):
      cols = []
      for j in range(len(grid[0])):
          for i in range(len(grid)):
              if grid[i][j] == 1:
                  cols.append(j)
      return cols
masked: def sample_funcname ( var_0 ) :
      var_1 = [ ]
      for var_5 in range ( len ( var_0 [ 0 ] ) ) :
          for var_6 in range ( len ( var_0 ) ) :
              if var_0 [ var_6 ] [ var_5 ] == 1 :
                  var_1.append ( var_5 )
      return var_1
  