1 import re
2 import unicodedata
3
4 s = "a00xoghasalexjkdfldhfjk"
5 v = s.find("alex")
6 print(v)
7
8 k = "23412342353464565346"
9 # 正则模糊匹配
10
11 # print(re.findall("alex", s))
12 # # .是通配符（除了换行之外）
13 # print(re.findall("a..x", s))
14 # # ^ （开头）和 $（结尾）
15 # print(re.findall("^a..x", s))
16 # print(re.findall("h..k$", s))
17 # # * (0-max) ；+(1,max) ； ? （0，1） 贪婪匹配
18 # b = "ccsrwrfdddddddddddkokosadkfod"
19 # print(re.findall("d*", b))
20 # print(re.findall("d+", b))
21 # print(re.findall("alex*", "asdhfale")) # 0-无穷大个
22 # print(re.findall("alex+", "asdhfale")) # 1-无穷大
23 # print(re.findall("alex?", "asdhfalex")) # 0-1个
24 # print(re.findall("alex?", "asdhfale")) # 0-1个
25 #
26 # # {}0-无穷大个 == * ; {1,} == + ; {6} 6次
27 # # {} 可以带贪婪匹配
28 # print(re.findall("alex{1,4}", "asdhfalexxx")) # 1-4个
29 # print(re.findall("alex{6}", "asdhfalexxx")) # 必须是6个
30 # # ? 惰性匹配
31 # print(re.findall("alex*?", "asdhfalexxx"))
32 # print(re.findall("alex+?", "asdhfalexxx"))
33 #
34 # # []字符集 中没有特殊符号（除了\-^）
35 # print(re.findall("www[oldboy baidu]", "wwwbaidu"))
36 # print(re.findall("x[ys]", "xyyszz"))
37 # print(re.findall("s[zby]a", "xyyszasya"))
38 # print(re.findall("s[zb,]a", "xyyszas,a"))
39 #
40 # print(re.findall("s[zb,]a", "xyyszas,a"))
41 # print(re.findall("s[zb*]a", "xyyscas,a"))
42 #
43 # # -之间
44 # print(re.findall("s[a-z]*", "sqaaaaerqwr"))
45 # print(re.findall("s[a-z]*", "sqaaaaerqwr9")) # [a-z] 之间
46 #
47 # print(re.findall("s[0-9]*", "s9qaaaaerqwr9")) # [a-z] 之间
48 # # ^非
49 # print(re.findall("s[^a-z]", "sqaaaaerqwr9")) # [a-z] 之间
50 # # \转义
51 # print(re.findall("\([^()]*\)", "12*(34*6+2-5*(2-1))"))
52 # print(re.findall("\([^()]+\)", "12*(34*6+2-5*(2-1))"))
53 #
54 # # \d 【0-9】的数值
55 # print(re.findall("\d+", "12*(34*6+2-5*(2-1))")) # [0-9]
56 # print(re.findall("\D+", "12*(34*6+2-5*(2-1))")) # [^0-9]
57 # print(re.findall("\s+", "hello world"), "ssss") # \t\n\r\f\v 任何空白符
58 # print(re.findall("\S+", "hello world")) # [^\t\n\r\f\v]
59 # print(re.findall("\w+", "hello world")) # [0-9a-zA-Z_]
60 # print(re.findall("\W", "hello world")) # [^0-9a-zA-Z_]
61 # print(re.findall("\b", "hello world")) # 空格，&，#
62 #
63 # print(re.findall(r"I\b", "hello I am world")) #
64 # print(re.findall("I\\b", "hello I am world")) #
65 #
66
67 # print(re.findall("c\\\f", r"abcde\fgh"))
68 # # | 或
69 # print(re.findall("gh|f", "abcde|fgh"))
70 # # () 分组
71 # print(re.findall("(abf)*", r"abfabfabfh"))
72 #
73 # print(re.findall("(?P<name>\w+)", r"abfabfabfh"))
74 #
75 # # search 找到第一个就返回一个对象(需要用group取出),，findall找到所有满足的结果放入列表
76 #
77 # print(re.search("\d+","23414afdfasf324fa"))
78 # print(re.search("\d+","23414afdfasf324fa").group())
79 # # 分组命名
80 # print(re.search("(?P<name>[a-z]+)(?P<age>\d+)","23414alex324fa").group("name","age"))
81 #
82 # # match 成功返回对象，失败啥也不返回
83 # print(re.match("\d+", "24dsd143f"))
84 #
85 # # split 分割
86 # print(re.split(" ", "hello abc asf"))
87 # print(re.split("[ |]", "hello abc|asf"))
88 # print(re.split("[ab]", "hebllo abc|asf"))
89 # # ["he","llo abc|asf"]->["he",“llo ","bc|asf"]->
90 # # ["he","llo "," ","c|asf"]->["he","llo "," ","c|","sf"],
91 # print(re.split("[ab]", "abc"))
92 # # 替换
93 # print(re.sub("\d+","A","dsfaf123aasf42112dfa"))
94 #
95 # print(re.subn("\d+","A","dsfaf123aasf42112dfa"))
96 #
97 # # 规则，书写规则
98 # com = re.compile("\d+")
99 # str1 = "qfaqs234rer1344"
100 # print(com.findall(str1))
101 #
102 # com = re.compile("\d")
103 # print(com.findall(str1))
104 # # 迭代器
105 # ite = com.finditer(str1)
106 # # next(ite)
107 # print(ite)
108 # # ?: 去除优先级
109 # print(re.findall("www\.(baidu|163)\.com","www.163.com")) # 163
110 # print(re.findall("www\.(?:baidu|163)\.com","www.163.com")) # www.163.com
# print(re.search("abc|bcd", "abc")) # search
# print(re.search("a(bc)|bcd", "abc").group())
# "\(9[^()]+\)"
print(re.findall("(abc)+", "abcabcabc")) # 给整体添加匹配
print(re.findall("abc+", "abcccabcabcfadfabc")) # ?:去除优先级,给c添加重复匹配