class_docstr: Create a PNG image from source code. This uses the Python Imaging Library to
  generate a pixmap from the source code.
  
  .. versionadded:: 0.10
  
  Additional options accepted:
  
  `image_format`
      An image format to output to that is recognised by PIL, these include:
  
      * "PNG" (default)
      * "JPEG"
      * "BMP"
      * "GIF"
  
  `line_pad`
      The extra spacing (in pixels) between each line of text.
  
      Default: 2
  
  `font_name`
      The font name to be used as the base font from which others, such as
      bold and italic fonts will be generated.  This really should be a
      monospace font to look sane.
  
      Default: "Bitstream Vera Sans Mono" on Windows, Courier New on \*nix
  
  `font_size`
      The font size in points to be used.
  
      Default: 14
  
  `image_pad`
      The padding, in pixels to be used at each edge of the resulting image.
  
      Default: 10
  
  `line_numbers`
      Whether line numbers should be shown: True/False
  
      Default: True
  
  `line_number_start`
      The line number of the first line.
  
      Default: 1
  
  `line_number_step`
      The step used when printing line numbers.
  
      Default: 1
  
  `line_number_bg`
      The background colour (in "#123456" format) of the line number bar, or
      None to use the style background color.
  
      Default: "#eed"
  
  `line_number_fg`
      The text color of the line numbers (in "#123456"-like format).
  
      Default: "#886"
  
  `line_number_chars`
      The number of columns of line numbers allowable in the line number
      margin.
  
      Default: 2
  
  `line_number_bold`
      Whether line numbers will be bold: True/False
  
      Default: False
  
  `line_number_italic`
      Whether line numbers will be italicized: True/False
  
      Default: False
  
  `line_number_separator`
      Whether a line will be drawn between the line number area and the
      source code area: True/False
  
      Default: True
  
  `line_number_pad`
      The horizontal padding (in pixels) between the line number margin, and
      the source code area.
  
      Default: 6
  
  `hl_lines`
      Specify a list of lines to be highlighted.
  
      .. versionadded:: 1.2
  
      Default: empty list
  
  `hl_color`
      Specify the color for highlighting lines.
  
      .. versionadded:: 1.2
  
      Default: highlight color of the selected style
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docstr: Get the height of a line.
docstr_tok: ["Get","the","height","of","a","line","."]
code: def _get_line_height(self):
      """
      Get the height of a line.
      """
      return self.fonth + self.line_pad
  
imports: import os
  import sys
  from pygments.formatter import Formatter
  from pygments.util import get_bool_opt, get_int_opt, get_list_opt, get_choice_opt, xrange
  import subprocess
label_desc: Use image node_id 3 for calling the ImageFormatter obj's underlying member method code with example usage: obj._get_line_height() and returns: unknown