常见模块 collections 模块 re模块 random模块

from collections import namedtuple
point=namedtuple('point',['x','y'])
p=point(1,2)
print(p.x)
print(p.y)

from collections import deque
q=deque(['a','b','c'])
q.append('x')
q.appendleft('y')
print(q)

q.popleft()
print(q)

from collections import OrderedDict
s1=dict([('a',1),('b',2),('c',3)])
s=OrderedDict([('a',1),('b',2),('c',3)])
print(s)
print(s1)

from collections import defaultdict
values=[11,22,33,44,55,66,77,88,99,90]
my_dict=defaultdict(list)
for value in values:
if value>66:
my_dict['k1'].append(value)
else:
my_dict['k2'].append(value)
print(my_dict)

from collections import Counter
s=Counter('aabbddffeecc')
print(s)

random模块

import random
任意小数
print(random.random())
print(random.uniform(1,3))

任意整数
print(random.randint(1,5))
print(random.randrange(1,5,2))

随机返回一个任意数
print(random.choice([1,'2',[2,3]]))
print(random.sample([1,'2',[2,3]],3))

item=[1,2,3,4,5,6]
random.shuffle(item)
print(item)

re模块

import re
ret=re.findall('a','aaabsoulsalt')
print(ret)

ret=re.search('a','aaabsoulsalt').group()
print(ret)

ret=re.match('a','abbcc').group()
print(ret)

ret=re.split('[a,b]','abcde')
print(ret)

ret=re.sub('\d','h','abcde123',1)
print(ret)
ret=re.sub('\d','h','abcde123')
print(ret)

打印扑克牌花色

from collections import namedtuple
point=namedtuple('point',['x','y'])
for x in range(1,14):
if x==11:x='J'
if x == 12: x = 'Q'
if x == 13: x = 'K'
for y in ('黑桃','红桃','梅花','方片'):
p=point(x,y)
print(p)