Python3 notes

实例

#!/usr/bin/python3importreprint(re.search('www', 'www.runoob.com').span())  # 在起始位置匹配print(re.search('com', 'www.runoob.com').span())         # 不在起始位置匹配

以上实例运行输出结果为：

(0,3)

(11,14)

实例

#!/usr/bin/python3importreline = "Cats are smarter than dogs"searchObj = re.search(r'(.*) are (.*?) .*', line, re.M|re.I)ifsearchObj:    print("searchObj.group() : ", searchObj.group())   print("searchObj.group(1) : ", searchObj.group(1))   print("searchObj.group(2) : ", searchObj.group(2))else:    print("Nothing found!!")

以上实例执行结果如下：

searchObj.group():  Cats are smarter than dogs

searchObj.group(1):  Cats

searchObj.group(2):  smarter