liunx安装报错，升级pip解决

Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-6s653ioo/cryptography/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-rba9ew9y-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-6s653ioo/cryptography/

升级了个pip-解决

pip3 install --upgrade pip