ctypes.ArgumentError from Python 3.4.2 after modifying image.anchor of an animated Gif

Have you tried Pyglet 1.2 alpha1 or the repository code?

What steps will reproduce the problem?

Run the program below from 

OS X 10.10.2, Python 3.4.2
parse_version(pyglet.version)
('00000001', '00000002', '*alpha', '00000001', '*final')

Run the same code with Python 2.7.8 and there are no errors

Run the program without the section to modify the image anchor and it works in 
both Python 3 and Python 2

Program to display a sprite with an animated gif

import pyglet

window = pyglet.window.Window(800, 800) 

pyglet.resource.path = ['../resources']
pyglet.resource.reindex()

animation = pyglet.resource.animation("large_earth.gif")

anchor_x = animation.get_max_width()/2
anchor_y = animation.get_max_height()/2

for f in animation.frames:
    f.image.anchor_x = anchor_x
    f.image.anchor_y = anchor_y

world = pyglet.sprite.Sprite(img=animation, x=400, y=400) 

@window.event 

def on_draw(): 
        window.clear()
        world.draw()

if __name__ == '__main__': 

    pyglet.app.run()

Paste in the traceback or error message:

Traceback (most recent call last):
  File "./animate.py", line 18, in <module>
    world = pyglet.sprite.Sprite(img=animation, x=400, y=400) 
  File "/usr/local/lib/python3.4/site-packages/pyglet/sprite.py", line 229, in __init__
    self._texture = img.frames[0].image.get_texture()
  File "/usr/local/lib/python3.4/site-packages/pyglet/image/__init__.py", line 818, in get_texture
    force_rectangle)
  File "/usr/local/lib/python3.4/site-packages/pyglet/image/__init__.py", line 809, in create_texture
    self.anchor_x, self.anchor_y, 0, None)
  File "/usr/local/lib/python3.4/site-packages/pyglet/image/__init__.py", line 986, in blit_to_texture
    data)
ctypes.ArgumentError: argument 3: <class 'TypeError'>: wrong type

Paste in the output of `python -m pyglet.info`:

Python
------------------------------------------------------------------------------
sys.version: 3.4.2 (default, Oct 19 2014, 17:55:38) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.54)]
sys.platform: darwin
sys.maxint: 9223372036854775807
PyObjC not available
os.getcwd(): /Users/ianhoward/IansFiles/Python/pyglet/Firstprogram/version1

pyglet
------------------------------------------------------------------------------
pyglet.version: 1.2alpha1
pyglet.compat_platform: darwin
pyglet.__file__: /usr/local/lib/python3.4/site-packages/pyglet/__init__.py
pyglet.options['search_local_libs'] = True
pyglet.options['debug_gl'] = True
pyglet.options['debug_texture'] = False
pyglet.options['debug_gl_trace_args'] = False
pyglet.options['debug_trace_depth'] = 1
pyglet.options['debug_trace'] = False
pyglet.options['xlib_fullscreen_override_redirect'] = False
pyglet.options['xsync'] = True
pyglet.options['debug_trace_flush'] = True
pyglet.options['vsync'] = None
pyglet.options['debug_gl_trace'] = False
pyglet.options['debug_win32'] = False
pyglet.options['audio'] = ('directsound', 'pulse', 'openal', 'silent')
pyglet.options['debug_trace_args'] = False
pyglet.options['graphics_vbo'] = True
pyglet.options['font'] = ('gdiplus', 'win32')
pyglet.options['debug_graphics_batch'] = False
pyglet.options['debug_x11'] = False
pyglet.options['debug_font'] = False
pyglet.options['debug_media'] = False
pyglet.options['shadow_window'] = True
pyglet.options['darwin_cocoa'] = True
pyglet.options['debug_lib'] = False

pyglet.window
------------------------------------------------------------------------------
platform: <pyglet.window.Platform object at 0x109f232e8>
display: <pyglet.canvas.cocoa.CocoaDisplay object at 0x10a5934a8>
screens[0]: CocoaScreen(x=0, y=0, width=2560, height=1440)
config['double_buffer'] = 1
config['stereo'] = 0
config['buffer_size'] = 32
config['aux_buffers'] = 0
config['sample_buffers'] = 0
config['samples'] = 0
config['red_size'] = 0
config['green_size'] = 0
config['blue_size'] = 0
config['alpha_size'] = 8
config['depth_size'] = 32
config['stencil_size'] = 0
config['accum_red_size'] = 0
config['accum_green_size'] = 0
config['accum_blue_size'] = 0
config['accum_alpha_size'] = 0
config['major_version'] = None
config['minor_version'] = None
config['forward_compatible'] = None
config['debug'] = None
context: CocoaContext()

window.context._info
------------------------------------------------------------------------------
gl_info.get_version(): 2.1 ATI-1.30.5
gl_info.get_vendor(): ATI Technologies Inc.
gl_info.get_renderer(): AMD Radeon R9 M295X OpenGL Engine
gl_info.get_extensions():
   GL_APPLE_aux_depth_stencil
   GL_APPLE_client_storage
   GL_APPLE_element_array
   GL_APPLE_fence
   GL_APPLE_float_pixels
   GL_APPLE_flush_buffer_range
   GL_APPLE_flush_render
   GL_APPLE_object_purgeable
   GL_APPLE_packed_pixels
   GL_APPLE_pixel_buffer
   GL_APPLE_rgb_422
   GL_APPLE_row_bytes
   GL_APPLE_specular_vector
   GL_APPLE_texture_range
   GL_APPLE_transform_hint
   GL_APPLE_vertex_array_object
   GL_APPLE_vertex_array_range
   GL_APPLE_vertex_point_size
   GL_APPLE_vertex_program_evaluators
   GL_APPLE_ycbcr_422
   GL_ARB_color_buffer_float
   GL_ARB_depth_buffer_float
   GL_ARB_depth_clamp
   GL_ARB_depth_texture
   GL_ARB_draw_buffers
   GL_ARB_draw_elements_base_vertex
   GL_ARB_draw_instanced
   GL_ARB_fragment_program
   GL_ARB_fragment_program_shadow
   GL_ARB_fragment_shader
   GL_ARB_framebuffer_object
   GL_ARB_framebuffer_sRGB
   GL_ARB_half_float_pixel
   GL_ARB_half_float_vertex
   GL_ARB_imaging
   GL_ARB_instanced_arrays
   GL_ARB_multisample
   GL_ARB_multitexture
   GL_ARB_occlusion_query
   GL_ARB_pixel_buffer_object
   GL_ARB_point_parameters
   GL_ARB_point_sprite
   GL_ARB_provoking_vertex
   GL_ARB_seamless_cube_map
   GL_ARB_shader_objects
   GL_ARB_shader_texture_lod
   GL_ARB_shading_language_100
   GL_ARB_shadow
   GL_ARB_shadow_ambient
   GL_ARB_sync
   GL_ARB_texture_border_clamp
   GL_ARB_texture_compression
   GL_ARB_texture_compression_rgtc
   GL_ARB_texture_cube_map
   GL_ARB_texture_env_add
   GL_ARB_texture_env_combine
   GL_ARB_texture_env_crossbar
   GL_ARB_texture_env_dot3
   GL_ARB_texture_float
   GL_ARB_texture_mirrored_repeat
   GL_ARB_texture_non_power_of_two
   GL_ARB_texture_rectangle
   GL_ARB_texture_rg
   GL_ARB_transpose_matrix
   GL_ARB_vertex_array_bgra
   GL_ARB_vertex_blend
   GL_ARB_vertex_buffer_object
   GL_ARB_vertex_program
   GL_ARB_vertex_shader
   GL_ARB_window_pos
   GL_ATI_blend_equation_separate
   GL_ATI_blend_weighted_minmax
   GL_ATI_separate_stencil
   GL_ATI_texture_compression_3dc
   GL_ATI_texture_env_combine3
   GL_ATI_texture_float
   GL_ATI_texture_mirror_once
   GL_EXT_abgr
   GL_EXT_bgra
   GL_EXT_bindable_uniform
   GL_EXT_blend_color
   GL_EXT_blend_equation_separate
   GL_EXT_blend_func_separate
   GL_EXT_blend_minmax
   GL_EXT_blend_subtract
   GL_EXT_clip_volume_hint
   GL_EXT_debug_label
   GL_EXT_debug_marker
   GL_EXT_depth_bounds_test
   GL_EXT_draw_buffers2
   GL_EXT_draw_range_elements
   GL_EXT_fog_coord
   GL_EXT_framebuffer_blit
   GL_EXT_framebuffer_multisample
   GL_EXT_framebuffer_object
   GL_EXT_framebuffer_sRGB
   GL_EXT_geometry_shader4
   GL_EXT_gpu_program_parameters
   GL_EXT_gpu_shader4
   GL_EXT_multi_draw_arrays
   GL_EXT_packed_depth_stencil
   GL_EXT_packed_float
   GL_EXT_provoking_vertex
   GL_EXT_rescale_normal
   GL_EXT_secondary_color
   GL_EXT_separate_specular_color
   GL_EXT_shadow_funcs
   GL_EXT_stencil_two_side
   GL_EXT_stencil_wrap
   GL_EXT_texture_array
   GL_EXT_texture_compression_dxt1
   GL_EXT_texture_compression_s3tc
   GL_EXT_texture_env_add
   GL_EXT_texture_filter_anisotropic
   GL_EXT_texture_integer
   GL_EXT_texture_lod_bias
   GL_EXT_texture_mirror_clamp
   GL_EXT_texture_rectangle
   GL_EXT_texture_sRGB
   GL_EXT_texture_sRGB_decode
   GL_EXT_texture_shared_exponent
   GL_EXT_timer_query
   GL_EXT_transform_feedback
   GL_EXT_vertex_array_bgra
   GL_IBM_rasterpos_clip
   GL_NV_blend_square
   GL_NV_conditional_render
   GL_NV_depth_clamp
   GL_NV_fog_distance
   GL_NV_light_max_exponent
   GL_NV_texgen_reflection
   GL_NV_texture_barrier
   GL_SGIS_generate_mipmap
   GL_SGIS_texture_edge_clamp
   GL_SGIS_texture_lod
   GL_SGI_color_matrix

pyglet.gl.glu_info
------------------------------------------------------------------------------
glu_info.get_version(): 1.3 MacOSX
glu_info.get_extensions():

pyglet.gl.glx_info
------------------------------------------------------------------------------
GLX not available.

pyglet.media
------------------------------------------------------------------------------
audio driver: <pyglet.media.drivers.openal.OpenALDriver object at 0x10fb35048>

pyglet.media.avbin
------------------------------------------------------------------------------
Library: <CDLL '/usr/local/lib/libavbin.dylib', handle 7f8734533f30 at 
10fb26390>
AVbin version: 10
FFmpeg revision: 0

pyglet.media.drivers.openal
------------------------------------------------------------------------------
Library: <CDLL '/System/Library/Frameworks/OpenAL.framework/OpenAL', handle 
7f8734247440 at 10f81e7f0>
Version: (1, 1)
Extensions:
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/site-packages/pyglet/info.py", line 206, in _try_dump
    func()
  File "/usr/local/lib/python3.4/site-packages/pyglet/info.py", line 184, in dump_al
    for extension in driver.get_extensions():
  File "/usr/local/lib/python3.4/site-packages/pyglet/media/drivers/openal/__init__.py", line 635, in get_extensions
    return ctypes.cast(extensions, ctypes.c_char_p).value.split(' ')
TypeError: Type str doesn't support the buffer API

pyglet.input.wintab
------------------------------------------------------------------------------
WinTab not available.

Any additional info (platform/language/hardware) that may be relevant?

Apologies if this is a duplicate or user error
Original issue reported on code.google.com by howardan...@aol.com on 3 Feb 2015 at 10:48
kmonsoor / pyglet

ctypes.ArgumentError from Python 3.4.2 after modifying image.anchor of an animated Gif #775
