This is unexpected behaviour when compiling a moving average function with numba. Not compiling it and using python+numpy works fine.

gistfile1.txt

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-4-f143d352e435> in <module>()
----> 1 filtered = mean_filter(X, 10)

/Users/bayerj/anaconda/lib/python2.7/site-packages/numba/decorators.pyc in __call__(self, *args, **kwargs)
    162                 raise error.NumbaError("Expected %d arguments, got %d" % (
    163                                                         nargs, len(args)))
--> 164             return self.wrapper(self, *args, **kwargs)
    165 
    166     def invoke_compiled(self, compiled_numba_func, *args, **kwargs):

/Users/bayerj/anaconda/lib/python2.7/site-packages/numba/decorators.pyc in wrapper(numba_func, *args, **kwargs)
    187                        **translator_kwargs)
    188             compiled_numba_func = dec(f)
--> 189             return numba_func.invoke_compiled(compiled_numba_func, *args, **kwargs)
    190 
    191         f.live_objects = []

/Users/bayerj/anaconda/lib/python2.7/site-packages/numba/decorators.pyc in invoke_compiled(self, compiled_numba_func, *args, **kwargs)
    165 
    166     def invoke_compiled(self, compiled_numba_func, *args, **kwargs):
--> 167         return compiled_numba_func(*args, **kwargs)
    168 
    169 def jit_extension_class(py_class, translator_kwargs):

/Users/bayerj/anaconda/lib/python2.7/site-packages/numba/decorators.pyc in __call__(self, *args, **kwargs)
    153     def __call__(self, *args, **kwargs):
    154         if self.ctypes_func:
--> 155             return self.invoke_compiled(self.ctypes_func, *args, **kwargs)
    156         else:
    157             if kwargs:

/Users/bayerj/anaconda/lib/python2.7/site-packages/numba/decorators.pyc in invoke_compiled(self, compiled_numba_func, *args, **kwargs)
    165 
    166     def invoke_compiled(self, compiled_numba_func, *args, **kwargs):
--> 167         return compiled_numba_func(*args, **kwargs)
    168 
    169 def jit_extension_class(py_class, translator_kwargs):

ValueError: could not broadcast input array from shape (0) into shape (2)

(100, 2)
/Users/bayerj/anaconda/lib/python2.7/site-packages/numba/decorators.py:167: RuntimeWarning: tp_compare didn't return -1 or -2 for exception
  return compiled_numba_func(*args, **kwargs)