1.报错背景
ubuntu中python3安装numpy，报错如下：
self.cmdclass[command] = cmdclass = ep.load()
File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2324, in load
return self.resolve()
File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2330, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
ModuleNotFoundError: No module named 'setuptools.command.build'
2.解决方案
不能直接pip3安装上述模块，只需升级一下，即可安装numpy了，如下：
python3 -m pip install --upgrade pip setuptools wheel