How can I find the methods or attributes of an object in Python?

To find the attributes of an object, use the getarr() method in Python. To check if an attribute exist or not, use the hasattr() method. Set an attribute using the setattr() method in Python.

Access the attributes of an object

Example

To access the attributes of an object, we will use the getattr() method in Python −

class student:
   st_name ='Amit'
   st_age ='18'
   st_marks = '99'
   def demo(self):
      print(self.st_name)
      print(self.st_age)
      print(self.st_marks)

# Create objects
st1 = student()
st2 = student()

# The getattr() is used here
print ("Name = ",getattr(st1,'st_name'))
print ("Age = ",getattr(st2,'st_age'))

Output

Name = Amit
Age = 18

Access and set class attributes

Example

In this example, to set the attributes, we will use the setattr() method.

class student:
   st_name ='Tim'
   st_age ='18'
   def demo(self):
      print("Hello from demo() function")

# The getattr() is used here
print(getattr(student,'st_name'))

# Returns true if object has attribute
print(hasattr(student,'st_age'))

# Set additional attribute st_marks
setattr(student,'st_marks','95')

# Get Attribute
print(getattr(student,'st_marks'))

# Checking for an attribute
print(hasattr(student,'demo'))

Output

Tim
True
95
True

Access methods

Example

In this example, we will learn how to access methods −

class student:
   st_name ='Tim'
   st_age ='18'
   def demo(self):
      print("Hello from demo() function")

# The getattr() is used here
print(getattr(student,'st_name'))

# Returns true if object has attribute
print(hasattr(student,'st_age'))

# Set additional attribute st_marks
setattr(student,'st_marks','95')

# Get Attribute
print(getattr(student,'st_marks'))

# Checking for an attribute
print(hasattr(student,'demo'))

# Access methods using an object
st1 = student()
st1.demo()

Output

Tim
True
95
True
Hello from demo() function

AmitDiwan

Updated on: 16-Sep-2022

2K+ Views

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