How to pass a variable by reference in Python?


In Python, all variables are passed by reference by default. This means that when you pass a variable to a function, you are actually passing a reference to the same object in memory, rather than a copy of the object.

Here’s an example that demonstrates this:

def my_function(my_list):

my_list = [1, 2, 3]


In this example, we define a function my_function that takes a list as a parameter and appends the value 4 to the list. We call my_function with the list [1, 2, 3], which is passed by reference to the function. After the function call, we print the modified list, which now contains the value 4. We also print the original list, which has

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