How can I pass parameters to the class in python

Question

I have tried to create a class inside a class, How to pass parameters? Here is my code , can someone help me correct this code:

class student:
 def __init__(self, name, rollno, brand, ram, cpu):
 self.name = name
 self.rollno = rollno
 self.lap = self.laptop(self, brand, ram)
 def show(self):
 print(self.name, self.rollno)
 class laptop:
 def __init__(self, brand, ram, cpu):
 self.brand = brand
 self.ram = ram
 self.cpu = cpu
 def show(self):
 print(self.brand,self.ram,self.cpu)
 def __str__(self):
 return self.brand, self.ram, self.cpu
 def __str__(self):
 return self.name, self.rollno
 s1=student("Raj",3,"hp","i5",16)
 s2=student("Ram", 2, "dell", "i3", 8)
 
 s1.show()

Answer 1

You must pass the parameters of the internal class through the constructor of the external class:

class student:
 def __init__(self, name, rollno, brand, ram, cpu):
 self.name = name
 self.rollno = rollno
 self.lap = self.laptop(brand, ram, cpu)
 def show(self):
 print(self.name, self.rollno)
 self.lap.show()
 class laptop:
 def __init__(self, brand, ram, cpu):
 self.brand = brand
 self.ram = ram
 self.cpu = cpu
 def show(self):
 print(self.brand, self.brand, self.cpu)

Result:

>>> s1=student("Raj",3,"hp","i5",16)
>>> s1.show()
Raj 3
hp hp 16
>>> s2=student("Ram", 2, "dell", "i3", 8)
>>> s2.show()
Ram 2
dell dell 8

• sam2611: No , I am still unable to pass parameter to the variable like brand, ram and cpu.
• Wild Zyzop: @sam2611 have you added variables to the student class constructor def __init__(self, name, rollno, brand, ram, cpu): and to the laptop class constructor call self.lap = self.laptop(brand, ram, cpu)?