import re

# #1.search和match的区别

# pattern = re.compile(r'\d+')

# #match从头开始匹配

# m = pattern.match('onetwo12threefour34',6)

# print(m)

# #(在指定范围内查找 默认全局) 查找 只查一次 后面的8是从位置8开始只查一次

# s = pattern.search('onetwo12threefour34',8)

# print(s)#34

# s = pattern.search('onetwo12threefour34',7)

# print(s)#2

# print(s.group())

#2.分组

pattern = re.compile(r'(\d+) (\d+)')

s = pattern.search('hello 123 456')

print(s)

print(type(s.group()))#str类型

print(s.group(1))

print(s.group(2))

print(s.groups())