Python Programming with Raspberry Pi

The scope of variables in a function

There are two types of variables in a Python program: local and global variables. Local variables are local to a function, that is, it is a variable declared within a function is accessible within that function. The example is as follows:

def add_function():   a = 3   b = 2   c = a + b   print("The sum of a and b is ", c)

In this example, the variables a and b are local to the function add_function. Let's consider an example of a global variable:

a = 3 b = 2 def add_function():   c = a + b   print("The sum of a and b is ", c) add_function()

In this case, the variables a and b are declared in the main body of the Python script. They are accessible across the entire program. Now, let's consider this example: ...