Comment #3 on issue 1916 by smichr: Plotting fails: Window initialization
failed: Unable to share contexts
http://code.google.com/p/sympy/issues/detail?id=1916
If I do the following I get a plot:
from sympy import *
from sympy.thirdparty import import_thirdparty
pyglet = import_thirdparty("pyglet")
import pyglet.gl
import pyglet.window
from sympy import symbols, sin, cos
x,y = symbols('xy')
p=Plot(x, [x, -5, 5, 4], visible=True)
p.wait_for_calculations()
pyglet.app.run()
...but I also get the following error message:
Traceback (most recent call last):
File "C:\Python26\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
line 325, in RunScript
exec codeObject in __main__.__dict__
File "C:\Documents and Settings\chris\sympy\my\foo.py", line 11, in
<module>
pyglet.app.run()
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\app\__init__.py", line
264, in run
EventLoop().run()
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\app\win32.py", line 74,
in run
self._timer_func(0, 0, timer, 0)
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\app\win32.py", line 84,
in _timer_func
sleep_time = self.idle()
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\app\__init__.py", line
192, in idle
window.switch_to()
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\window\win32\__init__.py",
line 556, in switch_to
self._context.set_current()
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\gl\__init__.py", line
342, in set_current
self._info.set_active_context()
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\gl\gl_info.py", line
91, in set_active_context
self.vendor = cast(glGetString(GL_VENDOR), c_char_p).value
File "C:\Documents and
Settings\chris\sympy\sympy\thirdparty\pyglet\pyglet\gl\lib.py", line 105,
in errcheck
raise GLException(msg)
GLException: invalid operation
If I re-run without the app.run() it runs and doesn't print the error. But
if I don't include it the first time (and get the above error) then I get
the same "initialization failed" error message.
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