In order to access the instance variables of the shoppinglist class from code that is not contained within the class, you would need to create an instance of the class first.
What is code?
For the purposes of communication and information processing, a code is a set of principles that transforms information—such as a letter, word, voice, image, or gesture—into another format, sometimes shorter or secret, for storage on a storage device or for transmission over a communication channel. An early example is the development of language, which allowed people to express verbally what they were thinking, seeing, hearing, or feeling to others. However, speaking restricts the audience to the those present at the time the speech is delivered and limits its range of communication to a distance a voice may travel. The ability to communicate across space and time was greatly expanded by the discovery of writing, which transformed spoken words into pictorial symbols. Information from a source is transformed into symbols through the process of encoding for communication or storage.
Once you have done this, you can access the instance variables using the dot notation. For example, if you have a shoppinglist object named my_list, you can access the quantity instance variable using my_list.quantity.
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