python爬取HDU所有題目

還沒有爬具體題目資訊，待更新。

# -*- coding:utf-8 -*-

# 爬取hdu題目儲存到本地excel**
import requests
from bs4 import beautifulsoup
import xlsxwriter
# 儲存題目資訊二維陣列
allproblem =
# 建立excel檔案"hduproblem.xlsx"
workxlsx = xlsxwriter.workbook(
'hduproblem.xlsx'
)# 建立乙個表單
worksheet = workxlsx.add_worksheet(
)# 設定**格式
worksheet.set_column(1,
1,74)
ratio_format = workxlsx.add_format(
)title_format = workxlsx.add_format(
)head_format = workxlsx.add_format(
)worksheet.merge_range(0,
0,0,
2,'hdu online judge problem'
, title_format)
# 獲取網頁文字源**
defgethtmltext
(url)
:try
: r = requests.get(url)
r.raise_for_status(
)# r.encoding = 'utf-8'
return r.text
except
:return
''# 使用beautifulsoup根據樹狀標籤尋找需要爬取的資訊
deffillproblemlist
(soup)
: oneproblemlist =
# 題目資訊在這裡儲存
table = soup.find(
'table',}
) problemlist = table.get_text(
) problemlist = problemlist[47:
] temponepageproblemlist =
# 將每道題的資訊分開儲存
temponepageproblemlist = problemlist.split(
';')
# hdu每頁並不是100道題，中間會少幾道
pageproblemnum =
len(temponepageproblemlist)
for problem in
range
(pageproblemnum -1)
: temponeproblemlist = temponepageproblemlist[problem][4
:-1]
# 將題目每個資訊分開
oneproblemlist = temponeproblemlist.split(
',')
oneproblemlist[2]
= oneproblemlist[2]
[1:-
1]# 迴圈整理資料（計算通過率），題目名稱有可能含有未知個數','而被分開
flag =
1while flag:
try:
oneproblemlist[3]
=float
(oneproblemlist[3]
)/float
(oneproblemlist[4]
) flag =
0except
: oneproblemlist[2]
= oneproblemlist[2]
+ oneproblemlist[3]
del oneproblemlist[3]
try:
oneproblemlist[3]
=float
(oneproblemlist[3]
)/float
(oneproblemlist[4]
) flag =
0except
:pass
oneproblemlist.pop(
)def
main
(pages)
:# 表頭
sheethead =
['題號',''
,'題目'
,'正確率'
] headcol =
0for head in
range
(len
(sheethead)):
if head ==1:
continue
worksheet.write(
1, headcol, sheethead[head]
, head_format)
headcol +=
1# 截止到2023年6月14日共53頁題目
for page in
range(1
, pages +1)
: url =
''+str
(page)
html = gethtmltext(url)
soup = beautifulsoup(html,
'html.parser'
) fillproblemlist(soup)
# 將資訊寫入**
row =
2for problem in allproblem:
col =0;
for i in
range(0
,len
(problem)):
if i ==1:
continue
elif i ==3:
worksheet.write(row, col, problem[i]
) worksheet.write(row, col, problem[i]
, ratio_format)
col +=
1 row +=
1 workxlsx.close(
)if __name__ ==
'__main__'
: main(
53)

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