Python program to declare variables without assigning any value:
In python, we can declare variables without assigning any value to it. Whenever we create one variable in Python, we assign one value to it and python automatically defines its type.
For example :
my_value = 10
print(type(my_value))
my_value = 'Hello'
print(type(my_value))In this example, I have declared one variable my_value with value 10. Next, I assigned ‘Hello’ to this variable. For both cases, we are printing its type. It will give the below output:
<class 'int'>
<class 'str'>So, the type of this variable is changed once we change its value.
Declaring a variable without assigning any value:
In python, we can assign None to a variable that will declare its value without any value. If we want, we can assign any value to it later.
my_value = None
print(type(my_value))This program will print:
<class 'NoneType'>If you assign any value to this variable, it will change the type :
my_value = None
print(type(my_value))
my_value = 10
print(type(my_value))It prints :
<class 'NoneType'>
<class 'int'>