Global Variables in Python

Photo by Hitesh Choudhary on Unsplash

In Python, a global variable is a variable that is defined outside of all functions, classes, or blocks. It is accessible throughout the entire program, including inside functions, unless explicitly shadowed or modified. While global variables can be convenient, they come with caveats, such as reduced modularity and the potential for unintended side effects.

In this blog post, we’ll discuss global variables, how to use them, and best practices for managing them in Python programs.

Read the full story here: https://allwin-raju.medium.com/global-variables-in-python-ef41baeeecb2?sk=74e399e62c1678cc9ffeb37c939f398c

Defining and Using Global Variables

A global variable is simply any variable declared outside a function or block. Here’s an example:

# Global variable
x = 10

def print_global():
    print(f"The value of x is {x}")

print_global()  
# Output: The value of x is 10

In this example, the variable x is a global variable, and it can be accessed inside the print_global function.

Modifying Global Variables Inside Functions

By default, Python treats any variable assigned inside a function as a local variable. If you want to modify a global variable inside a function, you…