StockSearch

with open("stock.txt") as stockfile:
    stock = [{"ID":a, "Size":b, "Color":c, "Model":d, "Store": e, "Warehouse":f} for a, b, c, d, e, f in [line.split() for line in stockfile.read().splitlines()]]

def search(stock):
    model = input("Model Number: ")
    size = input("Size: ")
    color = input("Color: ")

    if size: stock = [i for i in stock if i["Size"].upper()==size.upper()]
    if color: stock = [i for i in stock if i["Color"].upper()==color.upper()]
    stock = [i for i in stock if i["Model"]==model]

    print("\nRestults:\n"+'\n'.join([f"Model: {i['Model']}, Size: {i['Size']}, Color: {i['Color']}, Number in store: {i['Store']}, Number in warehouse: {i['Warehouse']}" for i in stock]) if stock else "\nNo Results\n")


while True:
    search(stock)