bash regex to parse semver

parse_version_from_setuptools.sh

#!/bin/bash
# fancy regex will parse 0.8.39, can be used to parse semver
VERSION_FROM_SETUP=$(sed -n 's/^ *version="\([^"]*\).*/\1/p' setup.py)

# example setup.py file, start multi-line comment
: '
import setuptools
import os

setuptools.setup(
    name="project",
    version="0.8.39",
    author="Tom, Nancy",
    author_email="email@email.com",
    description="A CI/CD Automation Platform",
    url="https://github.com/link",
    install_requires=[
        'click>=7',
        'requests==2.21.0',
        'pyyaml>=5.3',
        'dependency-check==0.6.0'
    ]
    ...
)
'