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 py2exe or py2app.

As well as 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 ampersand (”@” 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.

class FileLocation(path)

Location on the filesystem.

open(filename, mode=’rb’)

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.

Variables:

• 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)

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).

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)

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.

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

reindex()

Refresh the file index.

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

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’)

class ZIPLocation(zip, dir)

Location within a ZIP file.

open(filename, mode=’rb’)

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

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)

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.

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)

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).

Return type:

Animation

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

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

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

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_texture_names()

Get the names of textures currently cached.

Return type:list of str