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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 render_module(inits, calls, inputs, outputs, dst_dir, pytorch_dict, pytorch_module_name):
 """ Render model. """


    inits = [i for i in inits if len(i) > 0]

    output = pytorch_model_template.format(**{
        'module_name': pytorch_module_name,
        'module_name_lower': pytorch_module_name.lower(),
        'inits': '\n'.join(inits),
        'inputs': inputs,
        'calls': '\n'.join(calls),
        'outputs': outputs,
    })

    if dst_dir is not None:
        import os
        import errno

        try:
            os.makedirs(dst_dir)
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise

        with open(os.path.join(dst_dir, pytorch_module_name.lower() + '.py'), 'w+') as f:
            f.write(output)
            f.close()

        torch.save(pytorch_dict, os.path.join(dst_dir, pytorch_module_name.lower() + '.pt'))

    return output