67 void exercise(list x, object y, object print)  in exercise()  argument
73     print("after append:");  in exercise()
74     print(x);  in exercise()
76     print("number of", y, "instances:", x.count(y));  in exercise()
78     print("number of 5s:", x.count(5));  in exercise()
81     print("after extend:");  in exercise()
82     print(x);  in exercise()
83     print("index of", y, "is:", x.index(y));  in exercise()
84     print("index of 'l' is:", x.index("l"));  in exercise()
87     print("after inserting 666:");  in exercise()
88     print(x);  in exercise()
89     print("inserting with object as index:");  in exercise()
91     print(x);  in exercise()
93     print("popping...");  in exercise()
95     print(x);  in exercise()
97     print(x);  in exercise()
99     print(x);  in exercise()
101     print("removing", y);  in exercise()
103     print(x);  in exercise()
104     print("removing", 666);  in exercise()
106     print(x);  in exercise()
108     print("reversing...");  in exercise()
110     print(x);  in exercise()
112     print("sorted:");  in exercise()
116     print(x);  in exercise()
118     print("reverse sorted:");  in exercise()
124     print(x);  in exercise()