python 實(shí)現(xiàn)添加標(biāo)簽&打標(biāo)簽的操作

odue_df=df_train_stmt.loc[(df_train_stmt.AGE3>0)|(df_train_stmt.AGE4>0)|(df_train_stmt.AGE5>0)|(df_train_stmt.AGE6>0),['XACCOUNT']].drop_duplicates()
odue_df['label']=1
cust_df=df_acct[['CUSTR_NBR','XACCOUNT']].drop_duplicates()
#做合并
df_y=pd.merge(cust_df,odue_df,how='left',on='XACCOUNT').groupby('CUSTR_NBR').agg({'label':max}).reset_index().fillna(0)

#標(biāo)注標(biāo)簽 Label
def label(row):
   if row['Date_received'] == 'null':
       return -1
   if row['Date'] != 'null':
       td = pd.to_datetime(row['Date'], format='%Y%m%d') - pd.to_datetime(row['Date_received'], format='%Y%m%d')
       if td = pd.Timedelta(15, 'D'):
           return 1
   return 0
dfoff['label'] = dfoff.apply(label, axis=1)
#打標(biāo)簽，判斷天數(shù)
def get_label(s):
    s = s.split(':')
    if s[0]=='null':
        return 0
    elif (date(int(s[0][0:4]),int(s[0][4:6]),int(s[0][6:8]))-date(int(s[1][0:4]),int(s[1][4:6]),int(s[1][6:8]))).days=15:
        return 1
    else:
        return -1
dataset2.label = dataset2.label.apply(get_label)

 
import re
import json 
import requests
from bs4 import BeautifulSoup
import lxml.html
from lxml import etree
 
result = requests.get('http://example.webscraping.com/places/default/view/Algeria-4')
with open('123.html', 'wb') as f:
    f.write(result.content)
# print(parse_regex(result.text))
test_data = """
        div>
            ul>
                 li class="item-0">a href="link1.html" rel="external nofollow"  rel="external nofollow"  id="places_neighbours__row">9,596,960first item/a>/li>
                 li class="item-1">a href="link2.html" rel="external nofollow" >second item/a>/li>
                 li class="item-inactive">a href="link3.html" rel="external nofollow" >third item/a>/li>
                 li class="item-1">a href="link4.html" rel="external nofollow"  id="places_neighbours__row">fourth item/a>/li>
                 li class="item-0">a href="link5.html" rel="external nofollow"  rel="external nofollow" >fifth item/a>/li>
                 li class="good-0">a href="link5.html" rel="external nofollow"  rel="external nofollow" >fifth item/a>/li>
             /ul>
             book>
                    title lang="aaengbb">Harry Potter/title>
                    price id="places_neighbours__row">29.99/price>
            /book>
            book>
                title lang="zh">Learning XML/title>
                price>39.95/price>
            /book>
            book>
                title>Python/title>
                price>40/price>
            /book>
         /div>
        """
# //div/ul/li/a[@id]  選取a標(biāo)簽中帶有id屬性的標(biāo)簽
# //div/ul/li/a　選取所有a標(biāo)簽
# //div/ul/li[2]/a
"""
/ 從根標(biāo)簽開始  必須具有嚴(yán)格的父子關(guān)系
// 從當(dāng)前標(biāo)簽  后續(xù)節(jié)點(diǎn)含有即可選出
* 通配符　選擇所有
//div/book[1]/title  選擇div下第一個(gè)book標(biāo)簽的title標(biāo)簽
//div/book[1]/tittle[@lang="zh"] 選擇div下第一個(gè)book標(biāo)簽的title標(biāo)簽并且內(nèi)容是zh的title標(biāo)簽
//div/book/title　//book/title //title 具有相同結(jié)果　只不過選取路徑不一樣
//book/title/@* 將title所有的屬性值選出來
//book/title/text() 將title的內(nèi)容選擇出來,使用內(nèi)置函數(shù)
//a[@href="link1.html" rel="external nofollow"  rel="external nofollow"  and @id="places_neighbours_row"]
//div/book/[last()]/title/text() 將最后一個(gè)book元素選出
//div/book[price > 39]/title/text() 將book子標(biāo)簽price數(shù)值大于３９的選擇出來
//li[starts-with(@class,'item')] 將class屬性前綴是item的選出來
//title[contains(@lang,"eng")]將title屬性lang含有eng關(guān)鍵字的標(biāo)簽選出
"""
html = lxml.html.fromstring(test_data)  # 加載任意一個(gè)字符串
html_data = html.xpath('//title[contains(@lang,"eng")]')  # xpath 查找路徑
# print(dir(html_data[0]))  # 查看html_data有什么功能
print(html_data)
for i in html_data:
    print(i.text)