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34.Python type(),id() and constants

Python type()
    The type() method is used to return the data type of a particular variable or an element.
Syntax:
type(variable/element)
Program:
a=12
print(type(a))
print(type("Tamilhacks"))
Output:
<class 'int'>
<class 'string'>
    The variable a is of data type 'a'.The type of "Tamilhacks" is a string.

Python id()
        The id() method is used to return the address of where  a particular variable or an element is stored.
Syntax:
id(variable/element)
Program:
a=12
print(id(a))
Output:
140727592198896
    The variable a containing element 12 is stored in the address 140727592198896.This address varies for each system.
Program:
a=12
print("a:",id(a))
b=a
print("b:",id(b))
Output:
a:140727592198896
b:140727592198896
    Note that,if more than one variable has the same data,they will point to the same address space.Since both a and b has the same element 12,it points to the same address space.Thus python is more memory efficient.
Constants in python
    Like Java,python cannot declare a variable as constant.However you can make a separate file for constants variables and then import it in the program to avoid changing the values.Python does not have a feature for declaring constant variables.
Interested in learning python,do check out the video below to learn the basics of python programming!!
Happy Learning!!

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