How Do I Modify and Access Global Variables within Python Functions?

Python: Global Variables in Functions

While the use of global variables is often discouraged due to potential confusion, Python provides mechanisms to manipulate them. When accessing a global variable within a function, simply use its name. However, to modify its value, the global keyword must be employed.

For instance:

x = "somevalue"

def func_A():
  global x  # Declares x as a global variable
  # Modify x
  return x

def func_B():
  x = func_A()  # Assigns the value of func_A's x to a local x
  # Use x
  return x

func_A()
func_B()

In this example, the x used in func_B refers to the same instance as the global x. Any changes made to x in func_A will be reflected in func_B.

It's important to note that the order of function definitions is inconsequential, but the order in which they are called is significant.

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