def coerce_file(fn):
    """Coerce file content to something useful for setuptools.setup(), turn :
       .py into mock object by extracting __special__ attributes values
       .md into rst text. Remove images with "[nopypi" alt text and emojis
       :url: https://github.com/Kraymer/setupgoon
    """
    import ast, os, re, tempfile, time, subprocess  # NOQA
    text = open(os.path.join(os.path.dirname(__file__), fn)).read()
    if fn.endswith('.py'):  # extract version, docstring etc out of python file
        mock = type('mock', (object,), {})()
        for attr in ('version', 'author', 'author_email', 'license', 'url'):
            regex = r'^__%s__\s*=\s*[\'"]([^\'"]*)[\'"]$' % attr
            m = re.search(regex, text, re.MULTILINE)
            setattr(mock, attr, m.group(1) if m else None)
        mock.docstring = ast.get_docstring(ast.parse(text))
        if mock.version.endswith('dev'):
            mock.version += str(int(time.time()))
        return mock
    if 'upload' in sys.argv and fn.endswith('md'):  # convert markdown to rest
        text = '\n'.join([l for l in text.split('\n') if '[nopypi' not in l])
        text = re.sub(r':\S+:', '', text)  # no emojis
        with tempfile.NamedTemporaryFile(mode='w+') as tmp:
            tmp.write(text)
            tmp.flush()
            text, stderr = subprocess.Popen(['pandoc', '-t', 'rst', tmp.name],
                stdout=subprocess.PIPE).communicate()
    return text
Coerce file content to something useful for setuptools.setup(), turn :
       .py into mock object by extracting __special__ attributes values
       .md into rst text. Remove images with "[nopypi" alt text and emojis
       :url: https://github.com/Kraymer/setupgoon