1.寫(xiě)一個(gè)生成式能夠產(chǎn)生的數(shù)據(jù)為: 1, 4, 27, 256, 3125,…, 9**9
print(list(x ** x for x in range(1,10)))
2.寫(xiě)一個(gè)生成式能夠產(chǎn)生1-10中所有半徑是偶數(shù)的圓的面積
import math
print(list(math.pi * (x ** 2) for x in range(1,11) if not(x % 2)))
3.寫(xiě)一個(gè)生成式交換字段的鍵和值楞卡，產(chǎn)生一個(gè)新的字典
dict1 = {'a':1, 'b':2, 'c':3}
print(dict((dict1[key], key) for key in dict1))
4.為函數(shù)寫(xiě)一個(gè)裝飾器，在函數(shù)執(zhí)行之后輸出 after
def add_after(fn):
def func(*args, **kwargs):
fn(*args, **kwargs)
print('after')
return func
@add_after
def test():
print('=====')
test()
5.為函數(shù)寫(xiě)一個(gè)裝飾器，把函數(shù)的返回值 +100 然后再返回
def add_hundred(fn):
def func(*args, **kwargs):
return fn(*args, **kwargs) +100
return func
@add_hundred
def test_sum(x, y):
return x + y
print(test_sum(10, 20))
6.寫(xiě)一個(gè)裝飾器@tag要求滿(mǎn)足如下功能:
@tag
def render(text):
# 執(zhí)行其他操作
return text
@tag
def render2():
return 'abc'
print(render('Hello')) # 打印出: <p>Hello</p>
print(render2()) # 打印出: <p>abc</p>
def tag(fn):
def func(*args, **kwargs):
return '<p>' + fn(*args, **kwargs) + '</p>'
return func
@tag
def render(text):
return text
@tag
def render2():
return 'abc'
print(render('Hello'))
print(render2())
7.寫(xiě)一個(gè)裝飾器@tag要求滿(mǎn)足如下功能:
@tag(name='p')
def render(text):
# 執(zhí)行其他操作
return text
@tag(name='div')
def render2():
return 'abc'
print(render('Hello')) # 打印出: <p>Hello</p>
print(render2()) # 打印出: <div>abc</div>
def tag(name):
def adorn(fn):
def func(*args, **kwargs):
return '<' + name + '>' + fn(*args, **kwargs) + '</' + name + '>'
return func
return adorn
@tag(name='p')
def render(text):
return text
@tag(name='div')
def render2():
return 'abc'
print(render('Hello'))
print(render2())
8.為函數(shù)寫(xiě)一個(gè)裝飾器，根據(jù)參數(shù)不同做不同操作。
flag為T(mén)rue阔馋，則 讓原函數(shù)執(zhí)行后返回值加100，并返回。
flag為False创葡，則 讓原函數(shù)執(zhí)行后返回值減100，并返回绢慢。
def tag(flag:bool):
def adorn(fn):
def func(*args, **kwargs):
if flag:
return fn(*args, **kwargs) + 100
else:
return fn(*args, **kwargs) - 100
return func
return adorn
@tag(flag=True)
def sum(x, y):
return x + y
print(sum(10, 20))
@tag(flag=False)
def sum(x, y):
return x + y
print(sum(100,200))
9.寫(xiě)一個(gè)斗地主發(fā)牌器
import random
from collections import defaultdict
poker = {'hearts':['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'],
'spade':['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'],
'cube':['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'],
'plum_blossom':['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'],
'king':['large','little']
}
framer_a = defaultdict(list)
framer_b = defaultdict(list)
landlord = defaultdict(list)
number = 54
order = 0
while number > 3:
color = random.choice(list(poker.keys()))
count = random.randint(0,len(poker[color])-1)
i = order % 3
if i == 0:
landlord[color] .append(poker[color][count])
elif i == 1:
framer_a[color] .append(poker[color][count])
else:
framer_b[color] .append(poker[color][count])
del poker[color][count]
if len(poker[color]) == 0:
poker.pop(color)
number -= 1
order += 1
end_poker = poker.copy()
for x in poker:
for i in range(len(poker[x])):
landlord[x].append(poker[x][i])
print('農(nóng)民1：',dict(framer_a))
print('農(nóng)民2：',dict(framer_b))
print('地主：',dict(landlord))
print('底牌：',dict(end_poker))
