numba: cannot determine Numba type of

Numba version: numba==0.44.1

System: armhf (arm 32bits) build of debian stretch running on an aarch64 kernel. I experienced some problem to properly import jit from numba, but it appeared to be solved at the end of https://github.com/numba/llvmlite/issues/497

MWE:

from pywi.processing.transform import starlet
import scipy.misc as misc
img=misc.face()[:,:,0]
t = starlet.wavelet_transform(img, number_of_scales=5)

Actual log:

python3 Python 3.5.3 (default, Sep 27 2018, 17:25:39) [GCC 6.3.0 20170516] on linux Type “help”, “copyright”, “credits” or “license” for more information.

from pywi.processing.transform import starlet import scipy.misc as misc img=misc.face()[:,:,0] t = starlet.wavelet_transform(img, number_of_scales=5) /home/rock/.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py:237: NumbaWarning: Compilation is falling back to object mode WITH looplifting enabled because Function “wavelet_transform” failed type inference due to: Internal error at <numba.typeinfer.CallConstraint object at 0xedcb6030>: –%<---------------------------------------------------------------------------- Traceback (most recent call last): File “/home/rock/.local/lib/python3.5/site-packages/numba/errors.py”, line 661, in new_error_context yield File “/home/rock/.local/lib/python3.5/site-packages/numba/typeinfer.py”, line 455, in call self.resolve(typeinfer, typevars, fnty) File “/home/rock/.local/lib/python3.5/site-packages/numba/typeinfer.py”, line 474, in resolve sig = typeinfer.resolve_call(fnty, pos_args, kw_args) File “/home/rock/.local/lib/python3.5/site-packages/numba/typeinfer.py”, line 1314, in resolve_call return self.context.resolve_function_type(fnty, pos_args, kw_args) File “/home/rock/.local/lib/python3.5/site-packages/numba/typing/context.py”, line 186, in resolve_function_type res = self._resolve_user_function_type(func, args, kws) File “/home/rock/.local/lib/python3.5/site-packages/numba/typing/context.py”, line 238, in _resolve_user_function_type return func.get_call_type(self, args, kws) File “/home/rock/.local/lib/python3.5/site-packages/numba/types/functions.py”, line 214, in get_call_type out = template.apply(args, kws) File “/home/rock/.local/lib/python3.5/site-packages/numba/typing/templates.py”, line 225, in apply sig = generic(args, kws) File “/home/rock/.local/lib/python3.5/site-packages/numba/typing/templates.py”, line 778, in generic sig = method_resolver(self, ty, args, kws) File “/home/rock/.local/lib/python3.5/site-packages/numba/typing/arraydecl.py”, line 442, in resolve_astype assert not kws AssertionError

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File “/home/rock/.local/lib/python3.5/site-packages/numba/typeinfer.py”, line 144, in propagate constraint(typeinfer) File “/home/rock/.local/lib/python3.5/site-packages/numba/typeinfer.py”, line 455, in call self.resolve(typeinfer, typevars, fnty) File “/usr/lib/python3.5/contextlib.py”, line 77, in exit self.gen.throw(type, value, traceback) File “/home/rock/.local/lib/python3.5/site-packages/numba/errors.py”, line 669, in new_error_context six.reraise(type(newerr), newerr, tb) File “/home/rock/.local/lib/python3.5/site-packages/numba/six.py”, line 659, in reraise raise value numba.errors.InternalError: [1] During: resolving callee type: BoundFunction(array.astype for readonly array(uint8, 2d, A)) [2] During: typing of call at /home/rock/.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py (298)

–%<----------------------------------------------------------------------------

File “.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py”, line 298: def wavelet_transform(input_image, <source elided>

input_image = input_image.astype('float64', copy=True)
^

@jit /home/rock/.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py:237: NumbaWarning: Compilation is falling back to object mode WITHOUT looplifting enabled because Function “wavelet_transform” failed type inference due to: cannot determine Numba type of <class ‘numba.dispatcher.LiftedLoop’>

File “.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py”, line 315: def wavelet_transform(input_image, <source elided>

for scale_index in range(number_of_scales - 1):
^

@jit Traceback (most recent call last): File “/home/rock/.local/lib/python3.5/site-packages/numba/errors.py”, line 661, in new_error_context yield File “/home/rock/.local/lib/python3.5/site-packages/numba/lowering.py”, line 258, in lower_block self.lower_inst(inst) File “/home/rock/.local/lib/python3.5/site-packages/numba/pylowering.py”, line 176, in lower_inst raise NotImplementedError(type(inst), inst) NotImplementedError: (<class ‘numba.ir.StaticRaise’>, <numba.ir.StaticRaise object at 0xedc40350>)

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File “<stdin>”, line 1, in <module> File “/home/rock/.local/lib/python3.5/site-packages/numba/dispatcher.py”, line 370, in _compile_for_args raise e File “/home/rock/.local/lib/python3.5/site-packages/numba/dispatcher.py”, line 327, in _compile_for_args return self.compile(tuple(argtypes)) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler_lock.py”, line 32, in _acquire_compile_lock return func(*args, **kwargs) File “/home/rock/.local/lib/python3.5/site-packages/numba/dispatcher.py”, line 659, in compile cres = self._compiler.compile(args, return_type) File “/home/rock/.local/lib/python3.5/site-packages/numba/dispatcher.py”, line 83, in compile pipeline_class=self.pipeline_class) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 955, in compile_extra return pipeline.compile_extra(func) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 377, in compile_extra return self._compile_bytecode() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 886, in _compile_bytecode return self._compile_core() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 873, in _compile_core res = pm.run(self.status) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler_lock.py”, line 32, in _acquire_compile_lock return func(*args, **kwargs) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 254, in run raise patched_exception File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 245, in run stage() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 463, in stage_objectmode_frontend cres = self.frontend_looplift() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 435, in frontend_looplift lifted=tuple(loops), lifted_from=None) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 1017, in compile_ir lifted_from=lifted_from) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 385, in compile_ir return self._compile_ir() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 893, in _compile_ir return self._compile_core() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 873, in _compile_core res = pm.run(self.status) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler_lock.py”, line 32, in _acquire_compile_lock return func(*args, **kwargs) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 254, in run raise patched_exception File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 245, in run stage() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 711, in stage_objectmode_backend self._backend(lowerfn, objectmode=True) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 687, in _backend lowered = lowerfn() File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 659, in backend_object_mode self.flags) File “/home/rock/.local/lib/python3.5/site-packages/numba/compiler.py”, line 1148, in py_lowering_stage lower.lower() File “/home/rock/.local/lib/python3.5/site-packages/numba/lowering.py”, line 177, in lower self.lower_normal_function(self.fndesc) File “/home/rock/.local/lib/python3.5/site-packages/numba/lowering.py”, line 218, in lower_normal_function entry_block_tail = self.lower_function_body() File “/home/rock/.local/lib/python3.5/site-packages/numba/lowering.py”, line 243, in lower_function_body self.lower_block(block) File “/home/rock/.local/lib/python3.5/site-packages/numba/lowering.py”, line 258, in lower_block self.lower_inst(inst) File “/usr/lib/python3.5/contextlib.py”, line 77, in exit self.gen.throw(type, value, traceback) File “/home/rock/.local/lib/python3.5/site-packages/numba/errors.py”, line 669, in new_error_context six.reraise(type(newerr), newerr, tb) File “/home/rock/.local/lib/python3.5/site-packages/numba/six.py”, line 659, in reraise raise value numba.errors.LoweringError: Failed in object mode pipeline (step: object mode frontend) Failed in object mode pipeline (step: object mode backend) (<class ‘numba.ir.StaticRaise’>, <numba.ir.StaticRaise object at 0xedc40350>)

File “.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py”, line 302: def wavelet_transform(input_image, <source elided> msg = “The data should be a 2D array.” raise WrongDimensionError(msg) ^

[1] During: lowering “raise <class ‘pywi.processing.transform.starlet.WrongDimensionError’>(‘The data should be a 2D array.’)” at /home/rock/.local/lib/python3.5/site-packages/pywi/processing/transform/starlet.py (302)

This should not have happened, a problem has occurred in Numba’s internals.

Please report the error message and traceback, along with a minimal reproducer at: https://github.com/numba/numba/issues/new

If more help is needed please feel free to speak to the Numba core developers directly at: https://gitter.im/numba/numba

Thanks in advance for your help in improving Numba!