local variable in python w3schools

Python Local Variables - A W3Schools Tutorial
Local variables in Python are variables that are declared inside a function and are only accessible within that function. They have a limited scope, and their existence is confined to the block of code where they are defined. In this tutorial, we'll explore the concept of local variables in Python, their scope, and how they differ from global variables.
Declaring Local Variables:
Local variables are created when you assign a value to a variable within a function. Unlike global variables, which are defined outside of functions and can be accessed from anywhere in the script, local variables are specific to the function in which they are declared.
In the example above, local_variable is a local variable because it is declared inside the example_function. Attempting to access local_variable outside this function will result in an error.
Scope of Local Variables:
The scope of a variable defines the region of the code where the variable can be accessed. Local variables have a limited scope, and they exist only within the function where they are declared. Attempting to access a local variable outside its function will result in a NameError.
Avoiding Confusion with Global Variables:
It's crucial to differentiate between local and global variables to avoid unexpected behavior in your code. If a variable is declared outside of any function, it is a global variable, and it can be accessed from any part of the script. However, if a variable is declared inside a function, it is local to that function.
Conclusion:
Understanding local variables in Python is essential for writing clean and maintainable code. Local variables provide a way to encapsulate data within functions, preventing unintended interference with other parts of your code. Always be mindful of variable scope to avoid unexpected behavior and make your code more robust.
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