What is my mistake?

Question

class student:
roll:" "
gpa:" "

def set_value(self,roll,gpa):
self.roll=roll
self.gpa=gpa

def display(self):
print(f"Roll:{self.roll},GPA:{self.gpa}")

fahim=student()
fahim.set_value(111,4.00)
fahim.display()

Answer 1

Just a matter of indentation, you used some spaces and some tabs and display() was not even indented (?) properly (you must be consistent while indenting with Python): https://code.sololearn.com/cb78oFR09NAE