pyglet.resource¶

Load application resources from a known path.

Loading resources by specifying relative paths to filenames is often problematic in Python, as the working directory is not necessarily the same directory as the application’s script files.

This module allows applications to specify a search path for resources. Relative paths are taken to be relative to the application’s __main__ module. ZIP files can appear on the path; they will be searched inside. The resource module also behaves as expected when applications are bundled using Freezers such as PyInstaller, py2exe, py2app, etc..

In addition to providing file references (with the file() function), the resource module also contains convenience functions for loading images, textures, fonts, media and documents.

3rd party modules or packages not bound to a specific application should construct their own Loader instance and override the path to use the resources in the module’s directory.

Path format¶

The resource path path (see also Loader.__init__() and Loader.path()) is a list of locations to search for resources. Locations are searched in the order given in the path. If a location is not valid (for example, if the directory does not exist), it is skipped.

Locations in the path beginning with an “at” symbol (‘’@’’) specify Python packages. Other locations specify a ZIP archive or directory on the filesystem. Locations that are not absolute are assumed to be relative to the script home. Some examples:

# Search just the `res` directory, assumed to be located alongside the
# main script file.
path = ['res']

# Search the directory containing the module `levels.level1`, followed
# by the `res/images` directory.
path = ['@levels.level1', 'res/images']

Paths are always case-sensitive and forward slashes are always used as path separators, even in cases when the filesystem or platform does not do this. This avoids a common programmer error when porting applications between platforms.

The default path is ['.']. If you modify the path, you must call reindex().

New in version 1.1.

exception ResourceNotFoundException(name): The named resource was not found on the search path.

exception UndetectableShaderType(name): The type of the Shader source could not be identified.

class FileLocation(filepath)

Location on the filesystem.

open(filename, mode='rb')

Open a file at this location.

Parameters:	filename : str The filename to open. Absolute paths are not supported. Relative paths are not supported by most locations (you should specify only a filename with no path component). mode : str The file mode to open with. Only files opened on the filesystem make use of this parameter; others ignore it.
Return type:	file object

class Loader(path=None, script_home=None)

Load program resource files from disk.

The loader contains a search path which can include filesystem directories, ZIP archives and Python packages.

Ivariables:	path : list of str List of search locations. After modifying the path you must call the reindex method. script_home : str Base resource location, defaulting to the location of the application script.

add_font(name)

Add a font resource to the application.

Fonts not installed on the system must be added to pyglet before they can be used with font.load. Although the font is added with its filename using this function, it is loaded by specifying its family name. For example:

resource.add_font('action_man.ttf')
action_man = font.load('Action Man')

Parameters:	name : str Filename of the font resource to add.

animation(name, flip_x=False, flip_y=False, rotate=0, border=1)

Load an animation with optional transformation.

Animations loaded from the same source but with different transformations will use the same textures.

Parameters:

name : str: Filename of the animation source to load.
flip_x : bool: If True, the returned image will be flipped horizontally.
flip_y : bool: If True, the returned image will be flipped vertically.
rotate : int: The returned image will be rotated clockwise by the given number of degrees (a multiple of 90).
border : int: Leaves specified pixels of blank space around each image in an atlas, which may help reduce texture bleeding.

Return type:

Animation

attributed(name)

Load an attributed text document.

See pyglet.text.formats.attributed for details on this format.

Parameters:	name : str Filename of the attribute text resource to load.
Return type:	FormattedDocument

file(name, mode='rb')

Load a resource.

Parameters:	name : str Filename of the resource to load. mode : str Combination of `r`, `w`, `a`, `b` and `t` characters with the meaning as for the builtin `open` function.
Return type:	file object

get_cached_animation_names()

Get a list of animation filenames that have been cached.

This is useful for debugging and profiling only.

Return type:	list
Returns:	List of str

get_cached_image_names()

Get a list of image filenames that have been cached.

This is useful for debugging and profiling only.

Return type:	list
Returns:	List of str

get_cached_texture_names()

Get the names of textures currently cached.

Return type:	list of str

get_texture_bins()

Get a list of texture bins in use.

This is useful for debugging and profiling only.

Return type:	list
Returns:	List of `TextureBin`

html(name)

Load an HTML document.

Parameters:	name : str Filename of the HTML resource to load.
Return type:	FormattedDocument

image(name, flip_x=False, flip_y=False, rotate=0, atlas=True, border=1)

Load an image with optional transformation.

This is similar to texture, except the resulting image will be packed into a TextureBin if it is an appropriate size for packing. This is more efficient than loading images into separate textures.

Parameters:	name : str Filename of the image source to load. flip_x : bool If True, the returned image will be flipped horizontally. flip_y : bool If True, the returned image will be flipped vertically. rotate : int The returned image will be rotated clockwise by the given number of degrees (a multiple of 90). atlas : bool If True, the image will be loaded into an atlas managed by pyglet. If atlas loading is not appropriate for specific texturing reasons (e.g. border control is required) then set this argument to False. border : int Leaves specified pixels of blank space around each image in an atlas, which may help reduce texture bleeding.
Return type:	Texture
Returns:	A complete texture if the image is large or not in an atlas, otherwise a `TextureRegion` of a texture atlas.

location(name)

Get the location of a resource.

This method is useful for opening files referenced from a resource. For example, an HTML file loaded as a resource might reference some images. These images should be located relative to the HTML file, not looked up individually in the loader’s path.

Parameters:	name : str Filename of the resource to locate.
Return type:	Location

media(name, streaming=True)

Load a sound or video resource.

The meaning of streaming is as for media.load. Compressed sources cannot be streamed (that is, video and compressed audio cannot be streamed from a ZIP archive).

Parameters:	name : str Filename of the media source to load. streaming : bool True if the source should be streamed from disk, False if it should be entirely decoded into memory immediately.
Return type:	media.Source

model(name, batch=None)

Load a 3D model.

Parameters:	name : str Filename of the 3D model to load. batch : Batch or None An optional Batch instance to add this model to.
Return type:	Model

reindex()

Refresh the file index.

You must call this method if path is changed or the filesystem layout changes.

shader(name, shader_type=None)

Load a Shader object.

Parameters:	name : str Filename of the Shader source to load. shader_type : str A hint for the type of shader, such as ‘vertex’, ‘fragment’, etc. Not required if your shader has a standard file extension.
Return type:	A compiled Shader object.

text(name)

Load a plain text document.

Parameters:	name : str Filename of the plain text resource to load.
Return type:	UnformattedDocument

texture(name)

Load a texture.

The named image will be loaded as a single OpenGL texture. If the dimensions of the image are not powers of 2 a TextureRegion will be returned.

Parameters:	name : str Filename of the image resource to load.
Return type:	Texture

class Location

Abstract resource location.

Given a location, a file can be loaded from that location with the open method. This provides a convenient way to specify a path to load files from, and not necessarily have that path reside on the filesystem.

open(filename, mode='rb')

Open a file at this location.

Parameters:	filename : str The filename to open. Absolute paths are not supported. Relative paths are not supported by most locations (you should specify only a filename with no path component). mode : str The file mode to open with. Only files opened on the filesystem make use of this parameter; others ignore it.
Return type:	file object

class URLLocation(base_url)

Location on the network.

This class uses the urlparse and urllib2 modules to open files on the network given a URL.

open(filename, mode='rb')

Open a file at this location.

Parameters:	filename : str The filename to open. Absolute paths are not supported. Relative paths are not supported by most locations (you should specify only a filename with no path component). mode : str The file mode to open with. Only files opened on the filesystem make use of this parameter; others ignore it.
Return type:	file object

class ZIPLocation(zip, dir)

Location within a ZIP file.

open(filename, mode='rb')

Open a file at this location.

Parameters:	filename : str The filename to open. Absolute paths are not supported. Relative paths are not supported by most locations (you should specify only a filename with no path component). mode : str The file mode to open with. Only files opened on the filesystem make use of this parameter; others ignore it.
Return type:	file object

get_data_path(name)

Get a directory to save user data.

For a Posix or Linux based system many distributions have a separate directory to store user data for a specific application and this function returns the path to that location. Note that the returned path may not exist: applications should use os.makedirs to construct it if desired.

On Linux, a directory name in the user’s data directory is returned (usually under ~/.local/share).

On Windows (including under Cygwin) the name directory in the user’s Application Settings directory is returned.

On Mac OS X the name directory under ~/Library/Application Support is returned.

Parameters:	name : str The name of the application.
Return type:	str

get_script_home()

Get the directory containing the program entry module.

For ordinary Python scripts, this is the directory containing the __main__ module. For executables created with py2exe the result is the directory containing the running executable file. For OS X bundles created using Py2App the result is the Resources directory within the running bundle.

If none of the above cases apply and the file for __main__ cannot be determined the working directory is returned.

When the script is being run by a Python profiler, this function may return the directory where the profiler is running instead of the directory of the real script. To workaround this behaviour the full path to the real script can be specified in pyglet.resource.path.

Return type:	str

get_settings_path(name)

Get a directory to save user preferences.

Different platforms have different conventions for where to save user preferences, saved games, and settings. This function implements those conventions. Note that the returned path may not exist: applications should use os.makedirs to construct it if desired.

On Linux, a directory name in the user’s configuration directory is returned (usually under ~/.config).

On Windows (including under Cygwin) the name directory in the user’s Application Settings directory is returned.

On Mac OS X the name directory under ~/Library/Application Support is returned.

Parameters:	name : str The name of the application.
Return type:	str

path = ['.']

Default resource search path.

Locations in the search path are searched in order and are always case-sensitive. After changing the path you must call reindex.

See the module documentation for details on the path format.

Type:	list of str

Functions¶

reindex()¶

Refresh the file index.

You must call this method if path is changed or the filesystem layout changes.

file(name, mode='rb')¶

Load a resource.

Parameters:	name : str Filename of the resource to load. mode : str Combination of `r`, `w`, `a`, `b` and `t` characters with the meaning as for the builtin `open` function.
Return type:	file object

location(name)¶

Get the location of a resource.

This method is useful for opening files referenced from a resource. For example, an HTML file loaded as a resource might reference some images. These images should be located relative to the HTML file, not looked up individually in the loader’s path.

Parameters:	name : str Filename of the resource to locate.
Return type:	Location

add_font(name)¶

Add a font resource to the application.

Fonts not installed on the system must be added to pyglet before they can be used with font.load. Although the font is added with its filename using this function, it is loaded by specifying its family name. For example:

resource.add_font('action_man.ttf')
action_man = font.load('Action Man')

Parameters:	name : str Filename of the font resource to add.

image(name, flip_x=False, flip_y=False, rotate=0, atlas=True, border=1)¶

Load an image with optional transformation.

This is similar to texture, except the resulting image will be packed into a TextureBin if it is an appropriate size for packing. This is more efficient than loading images into separate textures.

Parameters:	name : str Filename of the image source to load. flip_x : bool If True, the returned image will be flipped horizontally. flip_y : bool If True, the returned image will be flipped vertically. rotate : int The returned image will be rotated clockwise by the given number of degrees (a multiple of 90). atlas : bool If True, the image will be loaded into an atlas managed by pyglet. If atlas loading is not appropriate for specific texturing reasons (e.g. border control is required) then set this argument to False. border : int Leaves specified pixels of blank space around each image in an atlas, which may help reduce texture bleeding.
Return type:	Texture
Returns:	A complete texture if the image is large or not in an atlas, otherwise a `TextureRegion` of a texture atlas.

animation(name, flip_x=False, flip_y=False, rotate=0, border=1)¶

Load an animation with optional transformation.

Animations loaded from the same source but with different transformations will use the same textures.

Parameters:

name : str: Filename of the animation source to load.
flip_x : bool: If True, the returned image will be flipped horizontally.
flip_y : bool: If True, the returned image will be flipped vertically.
rotate : int: The returned image will be rotated clockwise by the given number of degrees (a multiple of 90).
border : int: Leaves specified pixels of blank space around each image in an atlas, which may help reduce texture bleeding.

Return type:

Animation

texture(name)¶

Load a texture.

The named image will be loaded as a single OpenGL texture. If the dimensions of the image are not powers of 2 a TextureRegion will be returned.

Parameters:	name : str Filename of the image resource to load.
Return type:	Texture

media(name, streaming=True)¶

Load a sound or video resource.

The meaning of streaming is as for media.load. Compressed sources cannot be streamed (that is, video and compressed audio cannot be streamed from a ZIP archive).

Parameters:	name : str Filename of the media source to load. streaming : bool True if the source should be streamed from disk, False if it should be entirely decoded into memory immediately.
Return type:	media.Source

model(name, batch=None)¶

Load a 3D model.

Parameters:	name : str Filename of the 3D model to load. batch : Batch or None An optional Batch instance to add this model to.
Return type:	Model

shader(name, shader_type=None)¶

Load a Shader object.

Parameters:	name : str Filename of the Shader source to load. shader_type : str A hint for the type of shader, such as ‘vertex’, ‘fragment’, etc. Not required if your shader has a standard file extension.
Return type:	A compiled Shader object.

html(name)¶

Load an HTML document.

Parameters:	name : str Filename of the HTML resource to load.
Return type:	FormattedDocument

attributed(name)¶

Load an attributed text document.

See pyglet.text.formats.attributed for details on this format.

Parameters:	name : str Filename of the attribute text resource to load.
Return type:	FormattedDocument

text(name)¶

Load a plain text document.

Parameters:	name : str Filename of the plain text resource to load.
Return type:	UnformattedDocument

get_cached_image_names()¶

Get a list of image filenames that have been cached.

This is useful for debugging and profiling only.

Return type:	list
Returns:	List of str

get_cached_animation_names()¶

Get a list of animation filenames that have been cached.

This is useful for debugging and profiling only.

Return type:	list
Returns:	List of str

get_texture_bins()¶

Get a list of texture bins in use.

This is useful for debugging and profiling only.

Return type:	list
Returns:	List of `TextureBin`

get_cached_texture_names()¶

Get the names of textures currently cached.

Return type:	list of str

Exceptions¶

class ResourceNotFoundException(name)¶: The named resource was not found on the search path.

class UndetectableShaderType(name)¶: The type of the Shader source could not be identified.