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title: understanding python class variables and global variables
introduction:
in python, class variables and global variables are two distinct concepts that play a crucial role in programming. while both involve variables with a broader scope than local variables, they are used in different contexts. this tutorial will explore python class variables and global variables, explaining their differences and providing code examples to illustrate their usage.
1. python class variables:
class variables are variables that are shared among all instances (objects) of a class. they are defined within the class but outside of any class methods. all instances of the class share the same class variable, allowing them to access and modify its value.
example:
output:
2. python global variables:
global variables in python have a broader scope than local variables and can be accessed from anywhere in the code, including inside functions and classes. to declare a global variable within a function or method, the global keyword is used.
example:
output:
conclusion:
understanding the differences between class variables and global variables in python is crucial for effective object-oriented programming and modular code design. class variables are shared among instances of a class, while global variables are accessible throughout the entire program. proper use of these variables enhances code readability, maintainability, and reusability.
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