a = [1] b = [1] c = a print(id(a)) print(id(b)) print(id(c)) x = [1,2,3,4] print(id(x)) print(x) from math import pi, sqrt print(pi, sqrt) print("************ list *******************") a = [1, 2, 3, 4, 5, 6, 7, 8, 9] a.sort() print(a) a.append([10, 11]) print(a) a.insert(3, 10) a[0] = 9 print(a) del a[0] print(a) print(a[20:0:-4]) print(a[9:0:-4]) print (a) print("************ list *******************") print("************ tuple *******************") a = (1, 2, 3, 4, 5, 6, 7, 8, 9) b = list(a) b.append([10, 11]) a = tuple(b) print(a) c = a[::] print(c) print("************ tuple *******************") print("************ set *******************") a = [{"name": "John", "age" : 10}, {"name": "Peter", "age" : 20}] print(a[0]["name"]) print(a[0].get("name")) print(a[0]["age"]) print(a[1]["name"]) print(a[1]["age"]) print("************ set *******************") print("************ try split for list, tuple, set from String *******************") a = '1234567' print(list(a)) print([*a]) #unordered set print({*a}) #unordered set print(*a) #unordered set b = [*a] c = tuple(a) d = {*a} print(b) print(c) print(d) print("************ try split for list, tuple, set from String *******************") a = 3 % 2 b = 3** 2 print(a) print(b) a = input("Please input") b = float(a) / 3 print(f"b is {b} end") print(f"b is {b:<12.3f}".strip() + " end") words = ["apple", "bat", "cherry", "dog", "elderberry"] #a = words[0::2] x = [] for i in words: if len(i)>=4: x.append(i.upper()) print(x)