jeapedu 125 集合基本概念

链接: https://pan.baidu.com/s/1xQua30aVroGmaBkeh3uk8w 密码: 5nx2

# type int char list tuple dict
# set 集合
print(help(set))
s = "hello jeapedu"
print("string ->", s, len(s))
lis = list(s)
print("list ->", lis, len(lis))
liset = set(s)
print("set ->", liset, len(liset))
tl = tuple(s)
print("tuple ->", tl, len(tl))
tset = set(tl)
print("tset ->", tset, len(tset))
d = dict(a = 12, b = 13, c = 14)
print("dict ->", d, len(d))
dset = set(d)
print("dset ->", dset, len(dset))
dset1 = set(d.values())
print("dset1 ->", dset1, len(dset1))

li = range(97, 123)
la = map(chr, li)
lna = zip(la, li)
#for x, y in lna:
    #print(x, y)
s1 = set(lna)
print("s1", s1)
for x in s1:
    print(x)
# 無序，不可索引，可以遍歷。
#print(s1[0])