# implementierung der Klasse Schlüssel

class Key:
    how_many_keys = 0

    # Initialisierung eines Schlüssels
    def __init__(self, keynumber):
        self.number = keynumber
        self.possessor = "Reception"

    #where are the keys
    def status_key(self, keynumber=None):
        return self.number, self.possessor
        
    def hand_out_key(self, keynumber, Guest):
        self.possessor = Guest

    def get_back_key(self, keynumber):
        self.possessor = "Reception"

key_list = []
for i in range(11, 42, 10):
    a = "key_" + str(i) + " = key(" + str(i) + ")"
    print(a)
    exec(a)
    a2 = "key_list.append(key_" + str(i) + ")"
    exec(a2)
    
    b = "key_" + str(i+1) + " = key(" + str(i+1) + ")"
    print(b)
    exec(b)
    b2 = "key_list.append(key_" + str(i+1) + ")"
    exec(b2)
    
print(key_list)