re.search 扫描整个字符串并返回第一个成功的匹配。

上码：

import re

line = "Cats are smarter than dogs";

searchObj = re.search(r'(.*) are (.*?) .*', line)

if searchObj:
    print("searchObj.group() :", searchObj.group())
    print("searchObj.group(1):", searchObj.group(1))
    print("searchObj.group(2):", searchObj.group(2))
else:
    print("Nothing found!!")

运行结果：

F:\dev\python\python.exe F:/pyCharm/practice/config_dir/zip_demo.py
searchObj.group() : Cats are smarter than dogs
searchObj.group(1): Cats
searchObj.group(2): smarter

Process finished with exit code 0

码2：

import re
print(re.search('www', 'www.runoob.com').span())
print(re.search('com', 'www.runoob.com').span())

运行结果：

F:\dev\python\python.exe F:/pyCharm/practice/config_dir/zip_demo.py
(0, 3)
(11, 14)

Process finished with exit code 0