python_1

今天学习：

re模块

import re

pattern ="aa"

text = "aabbcccddaa"

a=re.search(pattern,text)

a = re.findall(pattern,text)

a = re.finditer(pattern,text)

 

collections模块

import collections

counters

d1 = collections.counters('abcdefdd')

print(d1)

deque 双端队列

d2 = collections.deque()

d2.extends(range(10))

d2.appendleft(11)