• Variables in python are the containers for storing data values.
• It gets mapped to that instance, they are reference, or pointers, to an object in memory which means that whenever a variable is assigned to an instance.
• Python is not statically typed, unlike other languages like C/C++/JAVA.
• Scope of a variable is the location where we can find a variable and also access it if required.
• In python there are four types of scopes they are, Local Scope, Global Scope, Enclosing Scope and Built-in Scope.

• Global variables are the ones that are defined and declared outside, not specified to any function.
• In current function a local scope refers to the local objects were available.
• Global scope refers to the objects available throughout the code execution since their inception.
• In program a module-level scope refers to the global objects of the current module accessible.
• In program an outermost scope refers to all the built-in names callable and objects in this scope are searched last to find the name referenced.

Sample Code : Global Scope

# This function modifies global variable 's'
def f():
    global s
    print(s)
    s = "Look for Wikitechy Python Section"
    print(s)
   
# Global Scope
s = "Python is great !"
f()
print(s)

Output