Changing the pitch of a sample leads to a TypeError

Description

When i try to change the pitch of my sample, i get the error

TypeError: Failed in nopython mode pipeline (step: nopython mode backend)
__new__() got an unexpected keyword argument 'code'

Steps/Code to Reproduce

#!/usr/bin/env python3
import librosa

data, sample_rate = librosa.core.load(sr=16000, path='my_file_path',offset=10.2, duration=10)
pitched = librosa.effects.pitch_shift(data, sr=sample_rate, n_steps=-4.0)

Expected Results

A numpy array with the pitched sample

Actual Results

File "HIDDEN", line 332, in export
    data = librosa.effects.pitch_shift(data, sr=sample_rate, n_steps=change_pitch_in_semitones)
  File "/path/to/my/venv/lib/python3.7/site-packages/librosa/effects.py", line 312, in pitch_shift
    y_shift = core.resample(time_stretch(y, rate, **kwargs), float(sr)/rate, sr,
  File "/path/to/my/venv/lib/python3.7/site-packages/librosa/effects.py", line 243, in time_stretch
    stft_stretch, dtype=y.dtype, length=len_stretch, **kwargs)
  File "/path/to/my/venv/lib/python3.7/site-packages/librosa/core/spectrum.py", line 321, in istft
    __overlap_add(y[frame * hop_length:], ytmp, hop_length)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/dispatcher.py", line 395, in _compile_for_args
    raise e
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/dispatcher.py", line 352, in _compile_for_args
    return self.compile(tuple(argtypes))
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler_lock.py", line 32, in _acquire_compile_lock
    return func(*args, **kwargs)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/dispatcher.py", line 693, in compile
    cres = self._compiler.compile(args, return_type)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/dispatcher.py", line 76, in compile
    status, retval = self._compile_cached(args, return_type)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/dispatcher.py", line 90, in _compile_cached
    retval = self._compile_core(args, return_type)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/dispatcher.py", line 108, in _compile_core
    pipeline_class=self.pipeline_class)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 972, in compile_extra
    return pipeline.compile_extra(func)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 390, in compile_extra
    return self._compile_bytecode()
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 903, in _compile_bytecode
    return self._compile_core()
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 890, in _compile_core
    res = pm.run(self.status)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler_lock.py", line 32, in _acquire_compile_lock
    return func(*args, **kwargs)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 266, in run
    raise patched_exception
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 257, in run
    stage()
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 764, in stage_nopython_backend
    self._backend(lowerfn, objectmode=False)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 703, in _backend
    lowered = lowerfn()
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 690, in backend_nopython_mode
    self.metadata)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/compiler.py", line 1145, in native_lowering_stage
    lower.create_cpython_wrapper(flags.release_gil)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/lowering.py", line 271, in create_cpython_wrapper
    release_gil=release_gil)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/targets/cpu.py", line 157, in create_cpython_wrapper
    builder.build()
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/callwrapper.py", line 122, in build
    self.build_wrapper(api, builder, closure, args, kws)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/callwrapper.py", line 163, in build_wrapper
    innerargs)
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/targets/callconv.py", line 481, in call_function
    builder.load(excinfoptr))
  File "/path/to/my/venv/lib/python3.7/site-packages/numba/targets/callconv.py", line 410, in _get_return_status
    excinfoptr=excinfoptr)
TypeError: Failed in nopython mode pipeline (step: nopython mode backend)
__new__() got an unexpected keyword argument 'code'

Versions

Linux-5.2.14-arch2-1-ARCH-x86_64-with-arch
Python 3.7.4 (default, Jul 16 2019, 07:12:58) 
[GCC 9.1.0]
NumPy 1.16.4
SciPy 1.3.0
librosa 0.7.0

[g3n35i5]

Wow, that actually fixed the bug, thanks a lot! I’m closing the issue.

[lostanlen]

I’m glad it’s solved!