import re

 import unicodedata

 s = "a00xoghasalexjkdfldhfjk"

 v = s.find("alex")

 print(v)

 k = ""

 # 正则模糊匹配

 # print(re.findall("alex", s))

 # #  .是通配符（除了换行之外）

 # print(re.findall("a..x", s))

 # #  ^ （开头）和 $（结尾）

 # print(re.findall("^a..x", s))

 # print(re.findall("h..k$", s))

 # #  * (0-max) ；+(1,max) ； ?  （0，1）  贪婪匹配

 # b = "ccsrwrfdddddddddddkokosadkfod"

 # print(re.findall("d*", b))

 # print(re.findall("d+", b))

 # print(re.findall("alex*", "asdhfale"))  # 0-无穷大个

 # print(re.findall("alex+", "asdhfale"))  # 1-无穷大

 # print(re.findall("alex?", "asdhfalex"))  # 0-1个

 # print(re.findall("alex?", "asdhfale"))  # 0-1个

 #

 # # {}0-无穷大个 == * ; {1,} == + ; {6} 6次

 # # {} 可以带贪婪匹配

 # print(re.findall("alex{1,4}", "asdhfalexxx"))  # 1-4个

 # print(re.findall("alex{6}", "asdhfalexxx"))  # 必须是6个

 # # ? 惰性匹配

 # print(re.findall("alex*?", "asdhfalexxx"))

 # print(re.findall("alex+?", "asdhfalexxx"))

 #

 # # []字符集  中没有特殊符号（除了\-^）

 # print(re.findall("www[oldboy baidu]", "wwwbaidu"))

 # print(re.findall("x[ys]", "xyyszz"))

 # print(re.findall("s[zby]a", "xyyszasya"))

 # print(re.findall("s[zb,]a", "xyyszas,a"))

 #

 # print(re.findall("s[zb,]a", "xyyszas,a"))

 # print(re.findall("s[zb*]a", "xyyscas,a"))

 #

 # # -之间

 # print(re.findall("s[a-z]*", "sqaaaaerqwr"))

 # print(re.findall("s[a-z]*", "sqaaaaerqwr9"))  # [a-z] 之间

 #

 # print(re.findall("s[0-9]*", "s9qaaaaerqwr9"))  # [a-z] 之间

 # # ^非

 # print(re.findall("s[^a-z]", "sqaaaaerqwr9"))  # [a-z] 之间

 # # \转义

 # print(re.findall("\([^()]*\)", "12*(34*6+2-5*(2-1))"))

 # print(re.findall("\([^()]+\)", "12*(34*6+2-5*(2-1))"))

 #

 # # \d 【0-9】的数值

 # print(re.findall("\d+", "12*(34*6+2-5*(2-1))"))  # [0-9]

 # print(re.findall("\D+", "12*(34*6+2-5*(2-1))"))  # [^0-9]

 # print(re.findall("\s+", "hello world"), "ssss")  # \t\n\r\f\v 任何空白符

 # print(re.findall("\S+", "hello world"))  # [^\t\n\r\f\v]

 # print(re.findall("\w+", "hello world"))  # [0-9a-zA-Z_]

 # print(re.findall("\W", "hello world"))  # [^0-9a-zA-Z_]

 # print(re.findall("\b", "hello world")) # 空格，&，#

 #

 # print(re.findall(r"I\b", "hello I am world"))  #

 # print(re.findall("I\\b", "hello I am world"))  #

 #

 # print(re.findall("c\\\f", r"abcde\fgh"))

 # # | 或

 # print(re.findall("gh|f", "abcde|fgh"))

 # # () 分组

 # print(re.findall("(abf)*", r"abfabfabfh"))

 #

 # print(re.findall("(?P<name>\w+)", r"abfabfabfh"))

 #

 # #  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

 #

 # print(re.search("\d+","23414afdfasf324fa"))

 # print(re.search("\d+","23414afdfasf324fa").group())

 # # 分组命名

 # print(re.search("(?P<name>[a-z]+)(?P<age>\d+)","23414alex324fa").group("name","age"))

 #

 # # match 成功返回对象，失败啥也不返回

 # print(re.match("\d+", "24dsd143f"))

 #

 # # split 分割

 # print(re.split(" ", "hello abc asf"))

 # print(re.split("[ |]", "hello abc|asf"))

 # print(re.split("[ab]", "hebllo abc|asf"))

 # # ["he","llo abc|asf"]->["he",“llo ","bc|asf"]->

 # # ["he","llo "," ","c|asf"]->["he","llo "," ","c|","sf"],

 # print(re.split("[ab]", "abc"))

 # # 替换

 # print(re.sub("\d+","A","dsfaf123aasf42112dfa"))

 #

 # print(re.subn("\d+","A","dsfaf123aasf42112dfa"))

 #

 # # 规则，书写规则

 # com = re.compile("\d+")

 # str1 = "qfaqs234rer1344"

 # print(com.findall(str1))

 #

 # com = re.compile("\d")

 # print(com.findall(str1))

 # # 迭代器

 # ite = com.finditer(str1)

 # # next(ite)

 # print(ite)

 # # ?: 去除优先级

 # print(re.findall("www\.(baidu|163)\.com","www.163.com"))  # 163

 # 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