Converts absolute text position to line/column position

absolute_position_to_line_column.py

def _absolute_position_to_line_column(string, pos):
    """
    Converts an absolute char-position to a line-column position.

    :param string: The string where the position is associated to.
    :param pos:    The position to convert (starts from 0).
    :returns:      A pair with (line, column). Line and column start with 1.
    """
    line = string.count("\n", 0, pos) + 1
    column = string.rfind("\n", 0, pos)
    if column == -1:
        column = 1
    else:
        column = pos - column + 1

    return (line, column)