Python – globals() function

globals() function in Python returns the dictionary of current global symbol table. 

Symbol table: Symbol table is a data structure which contains all necessary information about the program. These include variable names, methods, classes, etc. Global symbol table stores all information related to the global scope of the program, and is accessed in Python using globals() method. The functions, variables which are not associated with any class or function are stored in global scope.

Syntax: globals()

Parameters: No parameters required.

Code #1:

Python3

# Python3 program to demonstrate global() function

# global variable
a = 5

def func():
    c = 10
    d = c + a

    # Calling globals()
    globals()['a'] = d
    print (a)

# Driver Code
func()

Output:

15

Code #2:

Python3

# Python3 program to demonstrate global() function

# global variable
name = 'gautam'

print('Before modification:', name)

# Calling global()
globals()['name'] = 'gautam karakoti'
print('After modification:', name)

Output:

Before modification: gautam
After modification: gautam karakoti

Note: We can also change the value of global variables by using globals() function. The changed value also updated in the symbol table.