在树莓派 3 上运行 librosa 和 numba

Question

我正在尝试在我的 raspberry pi 3 上运行 librosa。在通过互联网搜索数小时后，我终于能够安装它，但是当我尝试导入它时仍然会引发错误。首先，我在安装依赖项时遇到了问题llvmlite。我最终使用以下代码安装了它：conda install -c numba llvmlite. 我使用带有 miniconda 的 python 3.4 构建。

安装 llvmlite 后，我可以使用pip（无法使用 conda）安装 librosa

pi@raspberrypi:~ $ pip install librosa
Collecting librosa
Using cached https://www.piwheels.hostedpi.com/simple/librosa/librosa-
0.5.1-py3-none-any.whl
Requirement already satisfied: resampy>=0.1.2 in 
./miniconda3/lib/python3.4/site-packages (from librosa)
Requirement already satisfied: scipy>=0.13.0 in 
...
Installing collected packages: librosa
Successfully installed librosa-0.5.1

显然 librosa 已安装。

pi@raspberrypi:~ $ pip list
DEPRECATION: The default format will switch to columns in the future. 
You can use --format=(legacy|columns) (or define a format=
(legacy|columns) in your pip.conf under the [list] section) to disable 
this warning.
anaconda-client (1.0.2)
audioread (2.1.5)
awscli (1.11.170)
boto3 (1.4.7)
botocore (1.7.28)
clyent (0.4.0)
colorama (0.3.7)
conda (3.16.0)
conda-env (2.4.2)
Cython (0.27.1)
decorator (4.1.2)
docutils (0.14)
jmespath (0.9.3)
joblib (0.11)
librosa (0.5.1)
llvmlite (0.7.0.dev0+21.gcda19bd.dirty)
mock (2.0.0)
numba (0.35.0)
numpy (1.13.3)
pbr (3.1.1)
Pillow (2.9.0)
pip (9.0.1)
protobuf (3.4.0)
pyasn1 (0.3.7)
PyAudio (0.2.11)
pycosat (0.6.1)
pycrypto (2.6.1)    
python-dateutil (2.6.1)
pytz (2015.4)
PyYAML (3.12)
requests (2.7.0)
resampy (0.2.0)
rsa (3.4.2)
s3transfer (0.1.11)
scikit-learn (0.18.2)
scipy (0.19.1)
setuptools (18.1)
six (1.11.0)
tensorflow (1.1.0)
Werkzeug (0.12.2)
wheel (0.30.0)

尝试导入 librosa 会引发以下错误：

pi@raspberrypi:~ $ python
Python 3.4.3 |Continuum Analytics, Inc.| (default, Aug 21 2015, 00:53:08) 
[GCC 4.6.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import librosa
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pi/miniconda3/lib/python3.4/site-packages/librosa/__init__.py", line 12, in <module>
    from . import core
  File "/home/pi/miniconda3/lib/python3.4/site-packages/librosa/core/__init__.py", line 108, in <module>
    from .time_frequency import *  # pylint: disable=wildcard-import
  File "/home/pi/miniconda3/lib/python3.4/site-packages/librosa/core/time_frequency.py", line 10, in <module>
    from ..util.exceptions import ParameterError
  File "/home/pi/miniconda3/lib/python3.4/site-packages/librosa/util/__init__.py", line 70, in <module>
    from . import decorators
  File "/home/pi/miniconda3/lib/python3.4/site-packages/librosa/util/decorators.py", line 67, in <module>
    from numba.decorators import jit as optional_jit
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/__init__.py", line 12, in <module>
    from .special import typeof, prange
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/special.py", line 4, in <module>
    from .parfor import prange
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/parfor.py", line 20, in <module>
    from numba import array_analysis, postproc, typeinfer
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/array_analysis.py", line 9, in <module>
    from numba import ir, analysis, types, config, cgutils, typing
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/cgutils.py", line 22, in <module>
    true_bit = bool_t(1)
TypeError: 'IntType' object is not callable
>>> 

尝试导入 numba 会引发以下错误：

pi@raspberrypi:~ $ python
Python 3.4.3 |Continuum Analytics, Inc.| (default, Aug 21 2015, 00:53:08) 
[GCC 4.6.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numba
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/__init__.py", line 12, in <module>
    from .special import typeof, prange
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/special.py", line 4, in <module>
    from .parfor import prange
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/parfor.py", line 20, in <module>
    from numba import array_analysis, postproc, typeinfer
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/array_analysis.py", line 9, in <module>
    from numba import ir, analysis, types, config, cgutils, typing
  File "/home/pi/miniconda3/lib/python3.4/site-packages/numba/cgutils.py", line 22, in <module>
    true_bit = bool_t(1)
TypeError: 'IntType' object is not callable
>>> 

有没有人知道问题可能是什么？我很感激任何提示或提示。谢谢！！！！！

Answer 1

As of writing, the latest Raspbian release has llvm-3.8, so per this github comment you need to install llvmlite v0.15.0 with numba v0.30.1. If you're on a different llvm then you will need to explore what versions of llvmlite and numba to use with that version of llvm. Here are the commands that got me set up to get a successful import librosa:

sudo apt install libblas-dev llvm python3-pip python3-scipy
virtualenv --system-site-packages -p python3 env
source env/bin/activate
pip install llvmlite==0.15.0
pip install numba==0.30.1
pip install librosa

Note I'm using virtualenv and dragging in scipy and numpy from the system packages, otherwise it's hard to get the fortran & c dependencies right plus those take ages to compile on a RPi. If you want to install system-wide then drop the 2nd and 3rd line and put sudo in front of the pip commands. I've also frozen my requirements in this requirements.txt file so if you download that then you can run a single command pip install -r requirements.txt