"""
Intro to OOP
Finn Aakre Haugen, finn@techteach.no
2025 05 13
"""

#%% Class def

class  Inventory:
    
    # Class constructor:
    def __init__(self, n_init):
        # Definition of attribute of name x:
        self.n = n_init
        
    # Def of method of name accum:
    def accum(self, u):
        self.n += u     
        return self.n


#%% Model settings

n_init = 10  # Initial contents of inventory

#%% Instantiation of object named inventory_1 of class named Inventory

inventory_1 = Inventory(n_init)

#%% Program part where the inventory_1 object is used

for k in range(2):

    input = 1
    
    contents_meth = inventory_1.accum(input)
    print(f'Contents from method inventory_1.accum: {contents_meth}')
    
    contents_att = inventory_1.n
    print(f'Contents as attribute inventory_1.n: {contents_att}')