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Asked:2020-05-27 16:11:33 +0000 UTC2020-05-27 16:11:33 +0000 UTC

Python解析器不工作

  • 772

解析器不起作用，我不明白问题是什么，以前一切正常，但现在它给出了错误：

Traceback (most recent call last):
  File "123.py", line 36, in <module>
    parse()
  File "123.py", line 30, in parse
    img = get_image(html)
  File "123.py", line 16, in get_image
    soup = BeautifulSoup(html, 'html.parser')
  File "C:\Users\musix\AppData\Local\Programs\Python\Python38\lib\site-packages\bs4\__init__.py", line 307, in __init__
    elif len(markup) <= 256 and (
TypeError: object of type 'Response' has no len()

这是代码本身：

import requests
from bs4 import BeautifulSoup
import csv
import os

URL = 'https://ptk-svarka.ru/catalog/apparaty-poluavtomaticheskoy-svarki-mig'
HEADERS = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36', 'accept': '*/*'}
FILE = 'svarka.csv'


def get_html(url, params=None):
    r = requests.get(url, headers=HEADERS, params=params)
    return r

def get_image(html):
    soup = BeautifulSoup(html, 'html.parser')
    items = soup.find_all('div', class_='b-products')
    image = []
    for img in image:
        image.append(
            item.find('a', class_='b-products__text').get('href')
            )
    return  image

def parse():
    URL = input('Введите URL: ')
    URL = URL.strip()
    html = get_html(URL)
    if html.status_code == 200:
        img = get_image(html)
        print(img)
    else:
        print('Error')


parse()
python

1 个回答

  1. Best Answer

    您BeautifulSoup需要将字符串、字节或文件对象传递给，并且您传递了一个requests.Response.

    我建议您给参数起正确的名称，并在函数中指定参数的类型和返回值，这不会强制解释器检查类型，但会对 IDE 和程序员有所帮助。

    例子：

    ...
def get_html(url, params=None) -> requests.Response:                # <<<<<
    r = requests.get(url, headers=HEADERS, params=params)
    return r

def get_image(html: bytes):                                         # <<<<<
    soup = BeautifulSoup(html, 'html.parser')
    items = soup.find_all('div', class_='b-products')
    image = []
    for img in image:
        image.append(
            item.find('a', class_='b-products__text').get('href')
        )
    return  image

def parse():
    URL = input('Введите URL: ')
    URL = URL.strip()
    rs = get_html(URL)                                           # <<<<<
    if rs.status_code == 200:                                    # <<<<<
        img = get_image(rs.content)                              # <<<<<
        print(img)
    else:
        print('Error')
    • 1

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