Q5. Syntax of global Keyword in Python

What is the Correct Usage (or Syntax) of global Keyword in Python?

1.

some_global_variable = 100

def some_function():
    global some_global_variable = 200

2.

some_global_variable = 100

def some_function():
    some_global_variable = 200 global

3.

some_global_variable = 100

def some_function():
    some_global_variable global = 200

4.

some_global_variable = 100

def some_function():
    global some_global_variable
    some_global_variable = 200

Answer: 4

some_global_variable = 100

def some_function():
    global some_global_variable
    some_global_variable = 200

Here is a article on local and global variables in Python.