【芒果派MangoPi MQ Pro】+ 失败的Python 3尝试

感谢电子发烧友论坛和芒果派。上次介绍了环境的安装，这次来尝试一下Python编程。本次评测本来的目标就是用开发板连接讯飞星火大数据模型，讯飞星火提供的接口是Python的，而芒果派MQ Pro安装有完整的Python 3，正好可以测试一下。

把讯飞星火提供的示例程序运行了一下，发现缺少Websocket库，结果发现板子上并没有安装pip，所以先需要安装pip：

sudo apt-get install python3-pip

接下来安装websocket，使用如下命令：

pip install websocket

结果发现在pip的仓库中虽然有websocket的库，但是安装该库的时候需要使用C语言进行编译，所以还需要安装python3-dev，使用如下命令：

sudo apt-get install python3-dev

安装完python3-dev，再次执行pip install websocket命令，经过了漫长的等待之后遇到了如下错误：

root@nezha:~# pip install websocket

Collecting websocket

Using cached websocket-0.2.1.tar.gz (195 kB)

Preparing metadata (setup.py) ... done

Collecting gevent

Using cached gevent-22.10.2.tar.gz (6.6 MB)

Installing build dependencies ... done

Getting requirements to build wheel ... done

Installing backend dependencies ... done

Preparing metadata (pyproject.toml) ... error

error: subprocess-exited-with-error

×
Preparing metadata (pyproject.toml) did not run successfully.

│
exit code: 1

╰─> [38 lines of output]

Traceback (most recent call last):

File
"/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py",
line 363, in <module>

main()

File
"/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py",
line 345, in main

json_out['return_val'] = hook(**hook_input['kwargs'])

File
"/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py",
line 164, in prepare_metadata_for_build_wheel

return hook(metadata_directory, config_settings)

File
"/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 174,
in prepare_metadata_for_build_wheel

self.run_setup()

File
"/usr/lib/python3/dist-packages/setuptools/build_meta.py", line 158,
in run_setup

exec(compile(code, __file__, 'exec'), locals())

File "setup.py", line 496, in <module>

run_setup(EXT_MODULES)

File "setup.py", line 362, in run_setup

setup(

File "/usr/lib/python3/dist-packages/setuptools/__init__.py",
line 153, in setup

return distutils.core.setup(**attrs)

File
"/usr/lib/python3/dist-packages/setuptools/_distutils/core.py", line
109, in setup

_setup_distribution = dist = klass(attrs)

File "/usr/lib/python3/dist-packages/setuptools/dist.py", line
459, in __init__

_Distribution.__init__(

File "/usr/lib/python3/dist-packages/setuptools/_distutils/dist.py",
line 293, in __init__

self.finalize_options()

File "/usr/lib/python3/dist-packages/setuptools/dist.py", line
837, in finalize_options

ep(self)

File "/usr/lib/python3/dist-packages/setuptools/dist.py", line
858, in _finalize_setup_keywords

ep.load()(self, ep.name, value)

File
"/tmp/pip-build-env-iexz875m/overlay/local/lib/python3.10/dist-packages/cffi/setuptools_ext.py",
line 219, in cffi_modules

add_cffi_module(dist, cffi_module)

File

"/tmp/pip-build-env-iexz875m/overlay/local/lib/python3.10/dist-packages/cffi/setuptools_ext.py",
line 49, in add_cffi_module

execfile(build_file_name, mod_vars)

File "/tmp/pip-build-env-iexz875m/overlay/local/lib/python3.10/dist-packages/cffi/setuptools_ext.py",
line 25, in execfile

exec(code, glob, glob)

File "src/gevent/libev/_corecffi_build.py", line 31, in
<module>

ffi = FFI()

File "/tmp/pip-build-env-iexz875m/overlay/local/lib/python3.10/dist-packages/cffi/api.py",
line 54, in __init__

raise Exception("Version mismatch: this is the 'cffi' package
version %s, located in %r.  When we
import the top-level '_cffi_backend' extension module, we get version %s,
located in %r.  The two versions should
be equal; check your installation." % (

Exception: Version mismatch: this is the 'cffi' package version 1.15.1,
located in
'/tmp/pip-build-env-iexz875m/overlay/local/lib/python3.10/dist-packages/cffi/api.py'.  When we import the top-level '_cffi_backend'
extension module, we get version 1.15.0, located in
'/usr/lib/python3/dist-packages/_cffi_backend.cpython-310-riscv64-linux-gnu.so'.  The two versions should be equal; check your
installation.

[end of output]

note: This error originates from a subprocess, and is likely not a
problem with pip.

error: metadata-generation-failed

× Encountered error while generating
package metadata.

╰─> See above for output.

note: This is an issue with the package
mentioned above, not pip.

hint: See above for details.

显然，安装脚本存在问题。最后只好放弃本次测评的计划了。结合这几天测试的结果，感觉虽然RISC-V生态已经有了很大的进步，不过因为关注的人不多，还有很多问题需要解决。