async def execute_wkhtmltopdf(uri: str) -> bytes:
    'Run wkhtmltopdf on the command-line and return the output.'
    cmd = ['wkhtmltopdf', '--log-level', 'none', uri, '-']
    return check_output(cmd)
Run wkhtmltopdf on the command-line and return the output.
async def execute_wkhtmltopdf(uri: str) -> bytes:
    
    cmd = ['wkhtmltopdf', '--log-level', 'none', uri, '-']
    return check_output(cmd)