使用python从web中提取表数据

Question

我需要从一个类似于数千行的网站"https://geniusimpex.org/pakistan-import-data/“中提取一个表，所以我想使用bs4和selenium自动处理这个过程，但是当我提取该表时，只提取表头。这是我使用的代码

from bs4 import BeautifulSoup   
from urllib.request import urlopen

url = "https://geniusimpex.org/pakistan-import-data/"

html = urlopen(url)

soup = BeautifulSoup(html, 'lxml')  
type(soup)  
soup.prettify()  
print(soup.find_all('tr'))  

它显示了以下输出

1：https://i.stack.imgur.com/GItzv.png

如您所见，只提取第一行。请有人告诉我，为什么我不能提取这张桌子，我怎么能这样做呢？这会很有帮助的。对不起，如果我不清楚或无法解释我的问题。这是我第一次问关于堆栈溢出的问题。

Answer 1

数据以Json的形式从外部URL加载。您可以使用此脚本加载以下信息：

import json
import requests


url = 'https://geniusimpex.org/wp-admin/admin-ajax.php?action=ge_forecast_list_data&order=asc&offset={offset}&limit=1000'

offset = 0
while True:
    data = requests.get(url.format(offset=offset)).json()

    # print data to screen:
    for row in data.get('rows', []):
        for k, v in row.items():
            print('{:<30} {}'.format(k, v))
        print('-' * 80)

    if len(data.get('rows', [])) != 1000:
        break

    offset += 1000

指纹：

...

--------------------------------------------------------------------------------
count                          T
importer_name                  <span file_id="27893" post_count="T" post_id="2157293">BISMILLAH STEEL FURNACE \n NEAR GRID STATION DEEWAN</span>
goods_description              IRON AND STEEL REMELTABLE SCRAP HARMONIZED CODE: 7204.4990 REFERENCE NUMBER:UM/PAK/5146A ITN: X20200629019843 NWT WEIGHT-19.650 MT SHIPPERS LOAD, STOWAGE AND COUNT
hs_code                        
shipment_port                   NEWARK  APT/NEW 
gross_weight                    19.65 
number_of_packages              1 
unit_of_packages                PACKAGES 
size_of_container               1 X 20FT 
imported_from_name             SEALINK INTERNATIONAL INC C/O\n UNIVERSAL METALS, ,
bill_of_lading_number           SII145321 
bill_of_lading_date            <span data="10-08-2020">10-08-2020</span>
--------------------------------------------------------------------------------
count                          T
importer_name                  <span file_id="27938" post_count="T" post_id="2159597">ASAD SHAHZAD S/O FAQIR ZADA</span>
goods_description              1 USED VEHICLE TOYOTA VITZ CHASSIS NO: KSP130 -2204837
hs_code                        NA
shipment_port                   NAGOYA,  AICHI 
gross_weight                    .97 
number_of_packages              1 
unit_of_packages                UNIT 
size_of_container               1 X 40FT 
imported_from_name             KASHMIR MOTORS , 3055-9-104 KUZUTSUKA NIIGATA KITA
bill_of_lading_number           TA200716H06- 10 
bill_of_lading_date            <span data="10-08-2020">10-08-2020</span>
--------------------------------------------------------------------------------


...

编辑:要保存到CSV，可以使用以下脚本：

import json
import requests
import pandas as pd


url = 'https://geniusimpex.org/wp-admin/admin-ajax.php?action=ge_forecast_list_data&order=asc&offset={offset}&limit=1000'

offset = 0
all_data = []
while True:
    data = requests.get(url.format(offset=offset)).json()

    # print data to screen:
    for row in data.get('rows', []):
        all_data.append(row)
        for k, v in row.items():
            print('{:<30} {}'.format(k, v))
        print('-' * 80)

    if len(data.get('rows', [])) != 1000:
        break

    offset += 1000

df = pd.DataFrame(all_data)
df.to_csv('data.csv')

生产：

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