python_tutor/set_demo3.py at master · phuketdev/python_tutor · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
def demo_loop():
    s = {"apple", "banana", "mango", "cherry"}
    a = list(s)
    a.sort()

    for f in a:
        print(f)

def demo_loop2():
    countries = {
        ("th", "Thailand"),
        ("jp", "Japan"),
        ("kr", "Korea")
    }
    # print(countries)
    # for c in countries:
    #     print(c[0])

    # for country_id, country_name in countries:
    #     print(country_name)

    for i, (country_id, country_name) in enumerate(countries):
        print("{}. {} {}".format(i + 1, country_id, country_name))

    if ("jp", "Japan") in countries:
        print("found")
    else:
        print("not found")

def immutable_set():
    # frozenset ไม่สามารถแก้ไขได้
    fz = frozenset(["lily", "carnation"])
    print(fz)
    print(type(fz))
    fz.add("ivy")
    print(fz)

# demo_loop()
# demo_loop2()
immutable_set()