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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def setup_package():
 """ Setup the package. """

    with open('requirements.txt', 'r') as req_file:
        install_reqs = req_file.read().split('\n')

    cmdclass_ = {'antlr': AntlrBuildCommand}
    cmdclass_.update(versioneer.get_cmdclass())

    setup(
        version=versioneer.get_version(),
        name='pymoca',
        maintainer="James Goppert",
        maintainer_email="james.goppert@gmail.com",
        description=DOCLINES[0],
        long_description="\n".join(DOCLINES[2:]),
        url='https://github.com/pymoca/pymoca',
        author='James Goppert',
        author_email='james.goppert@gmail.com',
        download_url='https://github.com/pymoca/pymoca',
        license='BSD',
        classifiers=[_f for _f in CLASSIFIERS.split('\n') if _f],
        platforms=["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"],
        install_requires=install_reqs,
        tests_require=['coverage >= 3.7.1', 'nose >= 1.3.1'],
        test_suite='nose.collector',
        python_requires='>=3.5',
        packages=find_packages("src"),
        package_dir={"": "src"},
        include_package_data=True,
        cmdclass=cmdclass_
    )