Python | locals() function

locals() function in Python returns the dictionary of current local symbol table.

Symbol table: It is a data structure created by compiler for which is used to store all information needed to execute a program.
Local symbol Table: This symbol table stores all information which needed to local scope of the program and this information is accessed using python built in function locals().

Syntax : locals()

Parameters: This function does not takes any input parameter.

Return Type : This returns the information stored in local symbol table.

Example #1:

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# Python program to understand about locals
  
# here no local varible is present
def demo1():
    print("Here no local variable  is present : ", locals())
      
# here local variables are present
def demo2():
     name = "Ankit"
     print("Here local variables are present : ", locals())
       
# driver code
demo1()
demo2()

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Output:


Here no local variable  is present :  {}
Here local variables are present :  {'name': 'Ankit'}





 

Example #2: Updating using locals().


Unlike from globals() this function can not modify the data of local symbol table. Below program exaplains it clearly.











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# Python program to understand about locals 


  


# here no local varible is present 


def demo1(): 


    print("Here no local variable  is present : ", locals()) 


      


# here local variables are present 


def demo2(): 


     name = "Ankit"


     print("Here local variables are present : ", locals()) 


     print("Before updating name is  : ", name) 


       


     # trying to change name value 


     locals()['name'] = "Sri Ram"


       


     print("after updating name is : ", name) 


       


# driver code 


demo1() 


demo2() 



















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Output:


Here no local variable  is present :  {}
Here local variables are present :  {'name': 'Ankit'}
Before updating name is  :  Ankit
after updating name is :  Ankit





 


Example #3: locals() for global environment.


Local symbol table is same as global symbol table in the case of global environment. 











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# Python program to understand about locals 


  


# data using locals 


print("This is using locals() : ", locals()) 


  


# data using globals 


print("This is using globals() : ", globals()) 



















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Output:



This is using locals() :  {‘__file__’: ‘/home/34dde64e1e47944021cdf478b97f13a0.py’, ‘__doc__’: None, ‘__name__’: ‘__main__’, ‘__cached__’: None, ‘__spec__’: None, ‘__builtins__’: , ‘__package__’: None, ‘__loader__’: <_frozen_importlib_external.SourceFileLoader object at 0x7f885e463470>}

This is using globals() :  {‘__file__’: ‘/home/34dde64e1e47944021cdf478b97f13a0.py’, ‘__doc__’: None, ‘__name__’: ‘__main__’, ‘__cached__’: None, ‘__spec__’: None, ‘__builtins__’: , ‘__package__’: None, ‘__loader__’: <_frozen_importlib_external.SourceFileLoader object at 0x7f885e463470>}






          
          
          
          

            

    

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