python小屋题库编程题答案(python画小房子代码)
Python爬虫期末试题（编程题答案）
from seleniumimport webdriver
import time
from selenium.webdriverimport ActionChains
driver = webdriver.Chrome()
driver.get("")
# 点击密码登录
driver.find_element_by_class_name('account-tab-account').click()
# 定位账户 # 输入内容
driver.find_element_by_id('username').send_keys('2331566038')
driver.find_element_by_id('password').send_keys('*********')
# 点击登录
driver.find_element_by_link_text('登录豆瓣').click()
# 进入内嵌滑动验证页面
iframe = driver.find_element_by_id('tcaptcha_iframe')
driver.switch_to_frame(iframe)
element = driver.find_element_by_xpath('//*[@id="tcaptcha_drag_thumb"]')
ActionChains(driver).click_and_hold(on_element=element).perform()
ActionChains(driver).move_to_element_with_offset(to_element=element,xoffset=180,yoffset=0).perform()
driver.save_screenshot('豆瓣.png')
time.sleep(5)
driver.quit()
import urllib.request
import urllib.parse
url =""
word = {"wd":"浙江大学"}
word = urllib.parse.urlencode(word)
new_url = url +"?" + word
header = {
"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36"
}
resquest = urllib.request.Request(new_url,headers = header,)
response = urllib.request.urlopen(resquest)
html = response.read().decode('utf-8')
print(html)
Python编程题求助
该答案为组合数学中著名的卡特兰数，其通式为C(2n,n)-C(2n,n-1)
这里采用递推关系求解，即动态规划的方法
设n对父子有d[n]种出场策略，注意初值d[0]=1
因为每个孩子前面必有一个父亲与之对应
对于i对父子，遍历第j个孩子，该孩子前面有j-1个孩子，对应d[j-1]种出场策略
后面有i-j个孩子，对应d[i-j]种出场策略，则d[i]+=d[j-1]*d[i-j]，最终d[n]即为所求
python代码如下：
n = int(input())
d = [0] * (n+1)
d[0] = 1
for i in range(n+1):
? for j in range(i+1):
? ? ? d[i] += d[j-1] * d[i-j]
print(d[n])
运行结果如下：
望采纳~
python 编程 求答案！2、3两题
#!/usr/bin/env?python
#coding=utf-8
import?re
from?datetime?import?datetime?as?dt,?timedelta
import?platform
if?platform.python_version()[:1]?==?'2':?#判断python版本是2还是3
????import?sys
????reload(sys)
????sys.setdefaultencoding('utf8')
class?Idcard(object):
????'''?
?????m?=?Idcard('225122198611134730')
?????print(m.sex)
????男
?????m.birth
????'1986-11-13'
?????m.age
????30
????'''
????def?__init__(self,idcard):
????????self.idcard?=?idcard????????
????????if?len(idcard)?==?15:
????????????sex,?birth?=?idcard[-1:],?'19'?+?idcard[6:12]
????????elif?len(idcard)?==?18:
????????????sex,?birth?=?idcard[-2:-1],?idcard[6:14]???
????????else:
????????????raise?Exception('len(idcard)?is?{}?(15/18)'.format(len(idcard)))
????????self._sex?=?int(sex)?%?2
????????self._birth?=?birth
????
????@property
????def?sex(self):
????????return?u'男'?if?self._sex?%?2?else?u'女'
????@property
????def?age(self):??
????????now,?bir?=?dt.now(),?dt.strptime(self._birth,?'%Y%m%d')
????????beforebirth?=?(now?-?dt(now.year,?bir.month,?bir.day)).days??0
????????return?dt.now().year?-?int(self._birth[:4])?-?beforebirth
????@property
????def?birth(self):
????????return?dt.strptime(self._birth,?'%Y%m%d').strftime('%Y-%m-%d')
def?alignment(str1,?space,?align?=?'left'):
????length?=?len(str1.encode('gb2312'))
????space?=?space?-?length?if?space?=length?else?0
????if?align?==?'left':
????????str1?=?str1?+?'?'?*?space
????elif?align?==?'right':
????????str1?=?'?'*?space?+str1
????elif?align?==?'center':
????????str1?=?'?'?*?(space?//2)?+str1?+?'?'*?(space?-?space?//?2)
????return?str1
????
def?main():
????fname?=?'customer.txt'
????'''
????with?open(fname,?'w')?as?f:
????????f.write("""
????????郑文杰?225122198611134730
????????文萍?225122198912094740
????????郑妈妈??225122590303476
????????郑爸爸?225122560506471
????????""")
????'''????
????newf?=?'ourcustomers.txt'
????with?open(fname)?as?f:
????????s?=?f.readlines()
????L,?newL?=?[re.split(r'\s+',?i.strip())?for?i?in?s],?[]
????for?i?in?L:
????????if?len(i)?==?2:
????????????g?=?Idcard(i[1])
????????????newL.append('{}{}{}'.format(
????????????????alignment(i[0],?10),?alignment(g.sex,?8),?g.age))
????with?open(newf,?'w')?as?f:
????????f.write('\n'.join(newL))
????print('\n'.join(newL[:100]))
????print('Customer?data?has?been?write?into?{}'.format(newf))
if?__name__?==?'__main__':
????import?doctest
????doctest.testmod()
????main()