从.csv 中读取 URL 并在前面使用 Python、BeautifulSoup、Z251D2BBFE9A3DC6954AZ6FE9A3DC698B4AZ3

Question

I got this code to almost work, despite much ignorance. Please help on the home run!

• Problem 1: INPUT:

I have a long list of URLs (1000+) to read from and they are in a single column in.csv. I would prefer to read from that file than to paste them into code, like below.

• Problem 2: OUTPUT:

The source files actually have 3 drivers and 3 challenges each. In a separate python file, the below code finds, prints and saves all 3, but not when I'm using this dataframe below (see below - it only saves 2).

• Problem 3: OUTPUT:

I want the output (both files) to have URLs in column 0, and then drivers (or challenges) in the following columns. But what I've written here (probably the 'drop') makes them not only drop one row but also move across 2 columns.

At the end I'm showing both the inputs and the current & desired output. Sorry for the long question. I'll be very grateful for any help!

import requests
from bs4 import BeautifulSoup
import pandas as pd

urls = ['https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Induction-Hobs-30196623/', 'https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Human-Capital-Management-30196628/', 'https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Probe-Card-30196643/']
dataframes = []
dataframes2 = []

for url in urls:
    page = requests.get(url)
    soup = BeautifulSoup(page.text, 'html.parser')
    toc = soup.find("div", id="toc")

    def get_drivers():
        data = []
        for x in toc.select('li:-soup-contains-own("Market drivers") li'):
            data.append(x.get_text(strip=True))
        df = pd.DataFrame(data, columns=[url])
        dataframes.append(pd.DataFrame(df).drop(0, axis=0))
        df2 = pd.concat(dataframes)
        tdata = df2.T
        tdata.to_csv(f'detail-dr.csv', header=True)

    get_drivers()


    def get_challenges():
        data = []
        for y in toc.select('li:-soup-contains-own("Market challenges") li'):
            data.append(y.get_text(strip=True).replace('Table Impact of drivers and challenges', ''))
        df = pd.DataFrame(data, columns=[url])
        dataframes2.append(pd.DataFrame(df).drop(0, axis=0))
        df2 = pd.concat(dataframes2)
        tdata = df2.T
        tdata.to_csv(f'detail-ch.csv', header=True)

    get_challenges()

The inputs look like this in each URL. They are just lists:

Market drivers

• Growing investment in fabs
• Miniaturization of electronic products
• Increasing demand for IoT devices

Market challenges

• Rapid technological changes in semiconductor industry
• Volatility in semiconductor industry
• Impact of technology chasm Table Impact of drivers and challenges

My desired output for drivers is:

0	1	2	3
http/.../Global-Induction-Hobs-30196623/	Product innovations and new designs	Increasing demand for convenient home appliances with changes in lifestyle patterns	Growing adoption of energy-efficient appliances
http/.../Global-Human-Capital-Management-30196628/	Demand for automated recruitment processes	Increasing demand for unified solutions for all HR functions	Increasing workforce diversity
http/.../Global-Probe-Card-30196643/	Growing investment in fabs	Miniaturization of electronic products	Increasing demand for IoT devices

But instead I get:

0	1	2	3	4	5	6
http/.../Global-Induction-Hobs-30196623/	Increasing demand for convenient home appliances with changes in lifestyle patterns	Growing adoption of energy-efficient appliances
http/.../Global-Human-Capital-Management-30196628/			Increasing demand for unified solutions for all HR functions	Increasing workforce diversity
http/.../Global-Probe-Card-30196643/					Miniaturization of electronic products	Increasing demand for IoT devices

Answer 1

Store your data in a list of dicts, create a data frame from it. Split the list of drivers / challenges into single columns and concat it to the final data frame.

Example

import requests
from bs4 import BeautifulSoup
import pandas as pd

urls = ['https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Induction-Hobs-30196623/', 'https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Human-Capital-Management-30196628/', 'https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Probe-Card-30196643/']
data = []

for url in urls:
    page = requests.get(url)
    soup = BeautifulSoup(page.text, 'html.parser')
    toc = soup.find("div", id="toc")

    def get_drivers():
        data.append({
            'url':url,
            'type':'driver',
            'list':[x.get_text(strip=True) for x in toc.select('li:-soup-contains-own("Market drivers") li')]
        })

    get_drivers()


    def get_challenges():
        data.append({
            'url':url,
            'type':'challenges',
            'list':[x.get_text(strip=True) for x in toc.select('li:-soup-contains-own("Market challenges") li') if x.get_text(strip=True) != 'Table Impact of drivers and challenges' ]
        })

    get_challenges()

    
pd.concat([pd.DataFrame(data)[['url','type']], pd.DataFrame(pd.DataFrame(data).list.tolist())],axis = 1)

Output

url	type	0	1	2
https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Induction-Hobs-30196623/	driver	Product innovations and new designs	Increasing demand for convenient home appliances with changes in lifestyle patterns	Growing adoption of energy-efficient appliances
https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Induction-Hobs-30196623/	challenges	High cost limiting the adoption in the mass segment	Health hazards related to induction hobs	Limitation of using only flat - surface utensils and induction-specific cookwareTable Impact of drivers and challenges
https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Human-Capital-Management-30196628/	driver	Demand for automated recruitment processes	Increasing demand for unified solutions for all HR functions	Increasing workforce diversity
https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Human-Capital-Management-30196628/	challenges	Threat from open-source software	High implementation and maintenance cost	Threat to data securityTable Impact of drivers and challenges
https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Probe-Card-30196643/	driver	Growing investment in fabs	Miniaturization of electronic products	Increasing demand for IoT devices
https://www.marketresearch.com/Infiniti-Research-Limited-v2680/Global-Probe-Card-30196643/	challenges	Rapid technological changes in semiconductor industry	Volatility in semiconductor industry	Impact of technology chasmTable Impact of drivers and challenges