All objects share static or class variables. Non-static variables or Instances are different for all different objects in python while using it for data science.
Variables that do not contain preceding static variables are known as instance variables. But in Python, we don’t require a static keyword. Variables having a value in class declaration are class variables. On the other hand, variables having values inside class methods are instance variables.
To learn more about variables in python for data science then you can check this and this as well. If you want to be a data scientist then you should start with a proper training as early as possible.