Fluidsynth error: "Name 'ctypes' is not defined"

Question

I am trying to use FluidSynth in a game that I'm working on, but I can't seem to get Fluidsynth to work properly. Whenever I try to import I get this:

>>> import fluidsynth
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python26\lib\site-packages\fluidsynth.py", line 35, in <module>
    _fl = ctypes.cdll.LoadLibrary("./libfluidsynth")
NameError: name 'ctypes' is not defined

I read that you can do some import command to get rid of the Ctypes error but when I try that this happens:

>>> lib = ctypes.WinDLL('C:\Python26\Lib\site-packages\libfluidsynth.dll')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python26\lib\ctypes\__init__.py", line 353, in __init__
    self._handle = _dlopen(self._name, mode)
WindowsError: [Error 193] %1 is not a valid Win32 application

I'm aware that the win32 application error usually happens when you're trying to run an app that's not designed for the computer's processor, but the source I downloaded the libfluidsynth.dll from said it was for Windows 32.
I am using Windows 7 64 bit, and Python 2.6.
Also, I downloaded Python on my 32-bit computer, and also the pyFluidSynth package and the FluidSynth DLL itself, however it was telling me it couldn't find the FluidSynth library or something.

The error is in the lib so `lib = ctypes.WinDLL('C:\Python26\Lib\site-packages\libfluidsynth.dll')` has no effect. Which fluidsynth are you using? — Padraic Cunningham, May 10 '16 at 23:15
I'm using Fluidsynth 0.2 for python. Not sure about the DLL but it's probably 1.1.3 — Devin Patrick Magruder, May 10 '16 at 23:32
I'd have to correct myself that I am using Fluidsynth 1.2.4. — Devin Patrick Magruder, May 11 '16 at 00:05
That package was uploaded in 2009, I would suggest you try something different http://bspaans.github.io/python-mingus/doc/wiki/tutorialFluidsynth.html — Padraic Cunningham, May 11 '16 at 09:01
Here's a [Screenshot](http://imgur.com/e0eyNlc) of what happens — Devin Patrick Magruder, May 11 '16 at 18:10

score 0 · Answer 1 · answered May 10 '16 at 23:14

0

When loading libraries, the library you're loading much match the architecture of the Python you are currently running.

Ensure that if your Python is 64-bit, that libfluidsynth.dll is 64-bit. Same with 32-bit. They must be the same.

You can identify whether your Python in 64-bit or 32-bit with this code:

>>> import platform
>>> print(platform.architecture()[0])
64bit

answered May 10 '16 at 23:14

Alyssa Haroldsen

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Oh, okay. I downloaded the 64-bit Fluidsynth DLL and the error went away. However, I'm still getting the ctypes error. – Devin Patrick Magruder May 10 '16 at 23:28
Sounds like a poorly designed package. How does [pyfluidsynth](https://pypi.python.org/pypi/pyFluidSynth) perform? If you can't switch to that, try adding `import ctypes` before the package. – Alyssa Haroldsen May 10 '16 at 23:30
I couldn't get pyFluidSynth to install or create an egg for some reason (even with easy install), so I don't know what's up with that. I'm trying to use simply Fluidsynth because of that. There's an egg info but I can't find the egg file. – Devin Patrick Magruder May 10 '16 at 23:44

Fluidsynth error: "Name 'ctypes' is not defined"

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