def coerce(cls, string):
        """Create a :class:`Requirement` object from a given package spec."""
        match = re.match(cls.spec_regex, string)
        if not match:
            raise InvalidRequirementSpecError("could not parse requirement")
        package = match.group(1)
        if all(match.group(2, 3)):
            version = "".join(match.group(2, 3))
        else:
            version = None
        return cls(package, version)
def test_parse_section_body():
    output_section = {
        'action_template': '    task',
        'sources_repls': 'source',
        'variable': '6',
        'target_pattern': 'target',
    }
    assert mariofile.parse_section_body(SECTION.splitlines(True)) == output_section
    with pytest.raises(mariofile.ConfigurationFileError):
        mariofile.parse_section_body(SECTION_MULTIPLE_RULE.splitlines(True))
    with pytest.raises(mariofile.ConfigurationFileError):
        mariofile.parse_section_body(INVALID_CONFIG.splitlines(True))