- 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
num = (x ** x for x in range(1, 10))
- 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
from math import pi
num = (pi * r ** 2 for r in range(1, 11) if r & 1 == 0)
- 寫(xiě)一個(gè)生成式交換字典的鍵和值凳干，產(chǎn)生一個(gè)新的字典
dict1 = {'a': 1, 'b': 2}
dict2 =dict((dict1[key], key) for key in dict1)
- 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 after_tail(fn):
def tail(*args, **kwargs):
fn(*args, **kwargs)
print('after')
return tail
- 為函數(shù)寫(xiě)一個(gè)裝飾器，把函數(shù)的返回值 +100 然后再返回肄满。
def sum1(fn):
def sum_100(*args, **kwargs):
n = fn(*args, **kwargs)
n += 100
return n
return sum_100
-
寫(xiě)一個(gè)裝飾器@tag要求滿足如下功能:
@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 str1(fn):
def str_add(*args, **kwargs):
n = fn(*args, **kwargs)
n = '<p>' + n + '</p>'
return n
return str_add
-
寫(xiě)一個(gè)裝飾器@tag要求滿足如下功能(需要使用帶參的裝飾器谴古，自己先自學(xué)正在一下):
@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 str_add1(x):
def str_add(*args, **kwargs):
if name == 'p':
n = x(*args, **kwargs)
n = '<p>' + n + '</p>'
return n
if name == 'div':
n = x(*args, **kwargs)
n = '<div>' + n + '</div>'
return n
return str_add
return str_add1
- 為函數(shù)寫(xiě)一個(gè)裝飾器，根據(jù)參數(shù)不同做不同操作稠歉。
flag為T(mén)rue掰担，則 讓原函數(shù)執(zhí)行后返回值加100，并返回怒炸。
flag為False带饱，則 讓原函數(shù)執(zhí)行后返回值減100，并返回阅羹。
def tag(flag):
def num_add1(x):
def num_add(*args, **kwargs):
if flag == True:
n = x(*args, **kwargs)
n += 100
return n
if flag == False:
n = x(*args, **kwargs)
n -= 100
return n
return num_add
return num_add1
- 寫(xiě)一個(gè)斗地主發(fā)牌器
import random
def poke_begin(poke):
poke = ['大王', '小王']
poke_nums = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K', 'A']
poke_flowers = ['?', '?', '?', '?']
for flowers in poke_flowers:
for nums in poke_nums:
poke.append(flowers + nums)
random.shuffle(poke)
player1 = []
player2 = []
player3 = []
dizhu = poke[51:]
print(dizhu)
for i in range(51):
if i % 3 == 0:
player1.append(poke[i])
if i % 3 == 1:
player2.append(poke[i])
else:
player3.append(poke[i])
print(player1)
print(player2)
print(player3)
return player1, player2, player3
