How to use global variable with same name as local variable in Python

In Python, if you have a global variable and a local variable with the same name, the local variable will take precedence within its scope. However, you can still access the global variable using the global keyword. Here's an example:

global_var = "I'm a global variable"

def my_function():
    global_var = "I'm a local variable"
    print("Inside the function (local):", global_var)

    # Access the global variable
    global global_var  # You need to use the 'global' keyword to refer to the global variable
    print("Inside the function (global):", global_var)

my_function()
print("Outside the function (global):", global_var)

Output:

Inside the function (local): I'm a local variable
Inside the function (global): I'm a global variable
Outside the function (global): I'm a global variable

In this example, we have a global variable named global_var and a local variable with the same name inside the my_function() function. When we print the value of global_var inside the function, it prints the local variable's value. To access the global variable inside the function, we use the global keyword followed by the variable name. This allows us to access and modify the global variable even when a local variable with the same name exists.

Keep in mind that using the same name for global and local variables can lead to confusion and make your code harder to maintain. It's generally a good practice to use descriptive variable names and avoid using the same name for global and local variables.

Python global variable with the same name as a local variable:

Description: Define a global variable with the same name as a local variable within a function.

Code:

x = 10  # Global variable

def example_function():
    x = 5  # Local variable with the same name
    print(x)  # Access local variable

example_function()
print(x)  # Access global variable

How to access a global variable shadowed by a local variable in Python:

Description: Access a global variable when a local variable with the same name exists.

Code:

x = 10  # Global variable

def example_function():
    x = 5  # Local variable with the same name
    print(globals()['x'])  # Access global variable using globals()

example_function()

Using the global keyword in Python for variables with the same name:

Description: Use the global keyword to indicate that a variable with the same name should refer to the global scope.

Code:

x = 10  # Global variable

def example_function():
    global x  # Declare x as a global variable
    x = 5
    print(x)  # Access global variable

example_function()
print(x)  # Modified global variable

Accessing global and local variables with the same name in Python:

Description: Understand how Python resolves names and access both global and local variables with the same name.

Code:

x = 10  # Global variable

def example_function():
    x = 5  # Local variable with the same name
    print(x)  # Access local variable
    print(globals()['x'])  # Access global variable using globals()

example_function()