python数据分析——lxml已下载但pycharm中使用仍然报错

参照一本书（《python数据分析入门 从数据获取到可视化》-沈祥壮）上的代码准备学习一下爬虫，但是卡在了标题中的错误中，尝试了很多方法：pip install lxml / pip uninstall lxml、直接在官网上下载相应版本的lxml 使用绝对路径安装等等，仍然无法解决。

期间有许多提示内容，其中就包括下图所示：

Requirement already satisfied: lxml in c:\users\许逍遥\appdata\local\programs\python\python37\lib\site-packages (4.4.1)

显示的意思很明显，已经安装过了lxml，所以问题就在pycharm配置这块，具体解决办法可以参考下面这篇文章（主要是

“

注意！敲黑板了！

进入到pycharm，选择file-setting-project interpreter：

”

这块）：

​​python 中安装lxml包出现的问题​​

修改相应配置后，就可以正常运行了！

附（实验代码）：

import requests
from bs4 import BeautifulSoup

url = 'https://book.douban.com/latest'

data = requests.get(url)
#data = requests.get(url)
#print(data.text)

soup = BeautifulSoup(data.text,'lxml')
books_left = soup.find('ul',{ 'class':'cover-col-4 clearfix' })
books_left = books_left.find_all('li')

books_right = soup.find('ul',{ 'class':'cover-col-4 pl20 clearfix' })
books_right = books_right.find_all('li')

books = list(books_left) + list(books_right)
#print(soup)

img_urls = []
titles = []
ratings = []
authors = []
details = []
for book in books:
    #封面图片url地址
    img_url = book.find_all('a')[0].find('img').get('src')
    img_urls.append(img_url)

    #图书标题
    title = book.find_all('a')[1].get_text()
    titles.append(title)

    # 评价星级
    rating = book.find('p', {'class': 'rating'}).get_text()
    rating = rating.replace('\n', '').replace(' ', '')
    ratings.append(rating)

    # 作者及出版信息
    author = book.find('p', {'class': 'color-gray'}).get_text()
    author = author.replace('\n', '').replace(' ', '')
    authors.append(author)

    # 图书简介
    detail = book.find_all('p')[2].get_text()
    detail = detail.replace('\n', '').replace(' ', '')
    details.append(detail)

    print("img_urls: ", img_urls)
    print("titles: ", titles)
    print("ratings: ", ratings)
    print("authors: ", authors)
    print("details: ", details)