Find minimum weight of students.

class Students:
   def __init__(self,name,ID,age,weight,height):
      self.name = name
      self.ID = ID
      self.age = age
      self.weight = weight
      self.height = height
     
   def get_weight(self):
      return self.weight
     
def setup():
   a = Students("Gun", 32075, 26, 90, 174)
   b = Students("Rit", 32078, 25, 80, 170)
   c = Students("Frame", 32080, 19, 58.2, 173)
   d = Students("Boat", 32057, 16, 70, 168)
   nukrean = [a, b, c, d]
   minimum(nukrean)
 
def minimum(nukrean):
   i = 0
   min = nukrean[i].get_weight()
   while(i < len(nukrean)):
      if(nukrean[i].get_weight() < min):
         min = nukrean[i].get_weight()
      i = i + 1
   print("Minimum is",min)
 
setup()