Summary of the most commonly used re regular expressions in Python

ImportRex = Re.search (' r\d+a ', ' 123chenronghua ')print (X.group ())s = re.search (' r[a-z]+a ', ' 123chenronghua ')print (S.group ())z = re.search (' r[a-z]+a$ ', ' 123chenronghuazhaobaoyua '). Group ()print (z)C = re.search (' r[a-z]+a ', ' 123chenronghua123zhaobaoyua '). Group ()print (c)  #f = Re.search (' aaa? ', ' aalixaaa ') #? match. The preceding character is once or 0 times #print (F.group ()) #执行结果aa because the third a matches 0 times, the preceding array of Re.search is preferred ("[0-9]{3}","M1a2k145search") Print (G.group ()) G = Re.findall ("[0-9]{1,3}","M1a2k345search") print (g) F = re.search (' aaa? ',' aalixaaa ') #? match. The preceding character is once or 0 times print (F.group ()) #执行结果aa because the third a matches 0 times, the first match precedes the array p = Re.search ("(? P<name>[a-z]{9}) (? P<age>[0-9]{2})","Zhaobaoyu23"). Groupdict () print (p) Split Digit SeparatorL = Re.split ("[0-9]+", "Zhao1bao2yu3is4haoren")print (L)