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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 get_context_template():
 """ Features which require configuration parameters in the product context need to refine this method and update the context with their own data. """

    import random
    return {
        'SITE_ID': 1,
        'SECRET_KEY': ''.join(
            [random.SystemRandom().choice('abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)') for i in range(50)]),
        'DATA_DIR': os.path.join(os.environ['PRODUCT_DIR'], '__data__'),
    }