phone='''
weref234
16888888888
as13423423
weq
435435
15812312312e
afa15812312316
13111111111
'''

pattern=re.compile(r'1[3-9]\d{9}')  	#todo 編譯正則表達(dá)式之后得到一個(gè)編譯對(duì)象

result=pattern.search(phone)   			#todo search只會(huì)返回第一個(gè)匹配的結(jié)果，如果沒有匹配成功返回None
print(result)                   		#todo <re.Match object; span=(10, 21), match='15812312312'>

phone='''
weref234
16888888888
as13423423
weq
435435
15812312312e
afa15812312316
13111111111
'''

pattern=re.compile(r'1[3-9]\d{9}')     #todo 編譯正則表達(dá)式之后得到一個(gè)編譯對(duì)象
result2=pattern.match(phone)
print(result2)

phone1="17812312345aaa"
pattern=re.compile(r'1[3-9]\d{9}')     #todo 編譯正則表達(dá)式之后得到一個(gè)編譯對(duì)象

result2=pattern.match(phone1)   #todo match函數(shù)是從第一個(gè)字符開始匹配(從w開始匹配)，如果第一個(gè)字符不匹配，則返回None
print(result2)
print(result2.group())   #todo 返回第一個(gè)匹配結(jié)果
print(result2.span())    #todo 返回第一個(gè)匹配結(jié)果的下標(biāo)

import re
#.匹配任意單個(gè)字符（不包括換行符）
one='123a'
res=re.match('.',one)
print(res.group())

#[]：匹配字符集，區(qū)間中的集合，可匹配其中任意一個(gè)字符
two='8'
res1=re.match('[0-9]',two)   #匹配1-9之間的數(shù)字
print(res1.group())

res2=re.match('[0,1,8,9]',two)  #匹配0、1、8、9之間的數(shù)字
print(res2.group())

two_2='Hello Python'
print(re.match('[hH]',two_2).group())    #匹配小寫或大寫H

#\d：匹配數(shù)字，即0-9，可以表示為[0-9]
three='天空1號(hào)發(fā)射成功'
print(re.match('天空\d',three).group())
print(re.search('\d',three).group())

print(re.match('[A-Z][a-z]*','Mn').group())
print(re.match('[A-Z][a-z]*','Msdfsg').group())
print(re.match('[A-Z][a-z][a-z]','Msdfs').group())

print(re.match(r'[a-zA-Z_]+[\w]*','name1').group())
print(re.match(r'[a-zA-Z_]+[\w]*','_name1').group())
print(re.match(r'[a-zA-Z_]+[\w]*','2_name1'))

print(re.match('[0-9]?[0-9]','88').group())
print(re.match('[0-9]?[0-9]','8').group())
print(re.match('[0-9]?[0-9]','08').group())
print(re.match('[0-9]?[0-9]','888').group())

print(re.match('[a-zA-Z0-9_]{8,20}','12345678').group())
print(re.match('[a-zA-Z0-9_]{8}','12345678').group())

emails='''
    awhaldc@163.com
asdasdfddasdfascvdfgbdfgdsds@163.com
afa_@163.com
awhaldc666@163.comax
q112dsdasdas@163.com
aaaa_____@qq.com
aaaa____@qq.com
'''
print(re.search('^[a-zA-Z][\w]{5,17}@163\.com$',emails,re.MULTILINE).group())

print(re.search(r'.*\bbeijing\b','I Love beijing too'))
print(re.search(r'.*\bbeijing\b','I Love beijing1 too'))

print(re.search(r'.*beijing','I Love beijing too'))

import re

emails='''
awhaldc@163.com
asdasdfddasdfascvdfgbdfgdsds@163.com
afa_@163.com
112dsdasdas@163.com
aaaa_____@126.com
aaaa____@163.com
'''

#findall：pattern在string里所有的非重復(fù)匹配，返回一個(gè)迭代器iterator保存了匹配對(duì)象
list=re.findall(r'(^[a-zA-Z][\w]{5,17}@(163|126).com$)',emails,re.MULTILINE)

print(list)
for email in list:
    print(email[0])

def add(result):    #result是一個(gè)匹配對(duì)象
    str_num=result.group()
    num=int(str_num)+1
    return str(num)


print(re.sub(r'\d+',add,'a=111'))

line='hello,world,china.'
print(re.split(r'\W+',line))

print(re.split(r':| ','info:kobe 18 beijing'))

line2='this is my phone:188-1111-6666'
#非貪婪模式，需求：把電話和電話的描述信息盡可能的分開，只能用正則表達(dá)式
result=re.match(r'(.+?)(\d+-\d+-\d+)',line2)
print(result.group(1))
print(result.group(2))