Python drill-down regular expression

#!/usr/bin/env Python3
Import re

‘‘‘
#常用功能介绍

[Pp]ython matches "python" or "python"
Rub[ye] matches "Ruby" or "Rube"
[Aeiou] matches any one of the letters within the brackets
[0-9] matches any number. Similar to [0123456789]
[A-z] matches any lowercase letter
[A-z] matches any uppercase letter
[a-za-z0-9] matches any letter and number
[^aeiou] All characters except the Aeiou letter
[^0-9] matches characters except for numbers

. Matches any single character except "\ n". To match any character including ' \ n ', use a pattern like ' [. \ n] '.
\d matches a numeric character. equivalent to [0-9].
\d matches a non-numeric character. equivalent to [^0-9].
\s matches any whitespace character, including spaces, tabs, page breaks, and so on. equivalent to [\f\n\r\t\v].
\s matches any non-whitespace character. equivalent to [^ \f\n\r\t\v].
\w matches any word character that includes an underscore. Equivalent to ' [a-za-z0-9_] '.
\w matches any non-word character. Equivalent to ' [^a-za-z0-9_] '.
‘‘‘



strings = ' 1K3JKSL24KLJZDIO43NDSFOI4NSADF '

#re. Compile (): Complie () compiles objects that need to be matched first, with the benefit of increasing execution speed

Re_complie=re.compile ("[0-9]+")


#match matches from the beginning of the entire object, the returned type is a string
SB = Re_complie.match (strings)
Print (Sb.group ())

#search look in the entire object, find the first return value, the returned type is a string
SB = Re_complie.search (strings)
Print (Sb.group ())

#findall look in the entire object, return a list
SB = Re_complie.findall (strings)
Print (SB)


#re. Split (): Split () User Split object
#split divide the matched format into a list as a split point pair of strings
SB = Re_complie.split (strings)
Print (SB)


#sub replace the characters that match
#count specify how many to replace, for example, 5 elements found in this example, specifying a replacement of four elements
SB = Re_complie.sub ("|", strings,count=4)
Print (SB)


#实例1: Match phone number

Phone_number = ' My name is Andy, my phone number was 13162156638, your call me Andy '
P_number= Re.search ("(1) [3458][0-9]{9}", Phone_number) #方法一
P_number= Re.search ("(1) [3458]\d{9}", Phone_number) #方法二
Print (P_number)


#实例2: Match IP address
IPAddress = "inet 192.168.60.223 netmask 0xffffff00 broadcast 192.168.60.255"
ip = Re.search ("(\d{3}.) {2} (\d{1,3}.) {2} ", IPAddress) #方法一
ip = Re.search ("(\d{1,3}.) {4} ", IPAddress) #方法二
Print (Ip.group ())


#实例3: Grouping Matching

Message = ' Oldboy School, Beijing changping shahe:010-8343245 '
Match = Re.search (R ' (\w+) (\w+) (\s+) ', message)

Print (Match.group ())

#实例3: Match Email address

message = ' [email protected] http://blog.163.com '
emails = "[email protected] http://www.oldboyedu.com"

email = re.search ("[A-za-z0-9][email protected][0-9]+\.com", message)
m = Re.search (r "[0-9.a-z]{0,26}@[0-9.a-z]{0,20}.[ 0-9a-z]{0,8} ", emails)
Print (Email.group ())
Print (M.group ())

Python drill-down regular expression