table "example csv above column manipulation can be performed on rows similarly this section will not repeat the same example but show some advance usages import pyexcel as pe data [[ , , ][ , , ][ , , ] pe internal sheets matrix(datam row[ : [[ ][ ] row[ : [ row[ [ del row[ : row[ [ __init__(matrixinitialize self see help(type(self)for accurate signature methods __init__(matrixformat([row_indexformatterformat_specs]get_converter(theformatterselect(indicesinitialize self format row return the actual converter or built-in converter delete row indices other than specified column representation represent columns of matrix column(matrixpyexcel internal sheets column class pyexcel internal sheets column(matrixrepresent columns of matrix table "example csv let us manipulate the data columns on the above data matriximport pyexcel as pe data [[ , , ][ , , ][ , , ] pe internal sheets matrix(data(continues on next page api documentation