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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 set_env_value(obj, attribute, value):
 """ Set the environment variable value for the attribute of the given object. will set the environment variable PREDIX_SECURITY_UAA_URI to the given uri. """

    varname = get_env_key(obj, attribute)
    os.environ[varname] = value
    return varname