Python hasattr() Method with Examples

In the previous article, we have discussed Python globals() Function with Examples
hasattr() Method in Python:

If the specified object has the specified attribute, the hasattr() function returns true; otherwise, it returns False.

Syntax:

hasattr(object, attribute)

Parameter Values

object: This is required. It is an object.

attribute: The name of the attribute to be checked whether exists or not.

Return Value:

The method hasattr() returns:

True if the object has the specified named attribute.
False if the object lacks the specified named attribute.

Method #1: Using Built-in Functions (Static Input)

Approach:

Create a class say Employdetails.
Take a variable and initialize it with some random number(id).
Take another variable and initialize it with some random name(ename).
Create an object for the class and store it in a variable.
Check if the above class has an attribute id by passing arguments like the above object and attribute name using the hasattr() function and print the result.
Similarly, do the same for the other attribute(jobrole) and print the result.
The Exit of the Program.

Below is the implementation:

# Create a class say Employdetails.
class Employdetails:
    # Take a variable and initialize it with some random number(id).
    id = 10
    # Take another variable and initialize it with some random name(ename).
    ename = 'Hitler'


# Create an object for the class and store it in a variable.
Employdetailsobj = Employdetails()
# Check if the above class has an attribute id by passing arguments like the
# above object and attribute name using the hasattr() function and print the result.
print('Does Employdetails has id?:', hasattr(Employdetailsobj, 'id'))
# Similarly, do the same for the other attribute(jobrole) and print the result.
print('Does Employdetails has jobrole?:', hasattr(Employdetailsobj, 'jobrole'))

Output:

Does Employdetails has id?: True
Does Employdetails has jobrole?: False

Method #2: Using Built-in Functions (User Input)

Approach:

Create a class say Employdetails.
Take a variable and initialize it with some random number(id).
Take another variable and initialize it with some random name(ename).
Create an object for the class and store it in a variable.
Give some random attribute name as user input using the input() function and store it in a variable.
Give the other attribute name as user input using the input() function and store it in another variable.
Check if the above class has the above attribute by passing arguments like the above object and above attribute name using the hasattr() function and print the result.
Similarly, do the same for the other attribute and print the result.
The Exit of the Program.

Below is the implementation:

# Create a class say Employdetails.
class Employdetails:
    # Take a variable and initialize it with some random number(id).
    id = 10
    # Take another variable and initialize it with some random name(ename).
    ename = 'Hitler'


# Create an object for the class and store it in a variable.
Employdetailsobj = Employdetails()
# Give some random attribute name as user input using the input() function
# and store it in a variable.
atrname1 = input("Enter some random attribute name = ")
# Give the other attribute name as user input using the input() function
# and store it in another variable.
atrname2 = input("Enter some random attribute name = ")
# Check if the above class has the above attribute by passing arguments like the above object
# and above attribute name using the hasattr() function and print the result.
print('Does Employdetails has', atrname1, '?:',
      hasattr(Employdetailsobj, atrname1))
# Similarly, do the same for the other attribute and print the result.
print('Does Employdetails has', atrname2, '?:',
      hasattr(Employdetailsobj, atrname2))

Output:

Enter some random attribute name = age
Enter some random attribute name = ename
Does Employdetails has age ?: False
Does Employdetails has ename ?: True

Fed up with searching various pages for the list of Python Built in Functions? Look at the tutorial linked here and explore all coding samples of built-in functions of python.