In general, class variables should be used only for symbolic constants or to keep data shared by all objects in a class. (True)
What is symbolic constants?
When someone mentions "constants" in any programming language, the majority of people immediately think of symbolic constants. Throughout a program, a fixed value is simply represented by a label or name, and this is what is meant by a "symbolic constant." As an illustration, the number 3.14159 could be defined as PI, a constant.
You can define a symbolic constant by using it as a label or as a.set statement. By assigning it a value, a symbol can be used as a constant. Instead of using the value itself, the value can then be referenced by its symbol name. If a value appears frequently in a program, using a symbol as a constant is practical.
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