Python Bangla Tutorials 51 : Introducing Methods

Learning outcomes:
1) how to define a method in a class ?
Full Python Course is here :

[asadujjamanstudent]

why this program is not run
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}")

rahim=student(1, 4)
rahim.display()

[topgamerz]

Self keno use kora hoy, sir jodi ektu kindly bolten tahole valo hoto