写一段在pubmed查找并下载近5年血压与scfa的文献的代码

我可以为您提供以下代码，用于在PubMed中搜索并下载有关血压和SCFA的最新文献：# Import necessary packages
import os
import time
import requests
from bs4 import BeautifulSoup# Start timer
start_time = time.time()# Search PubMed for articles published in the last 5 years
url = 'https://www.ncbi.nlm.nih.gov/pubmed/?term=blood+pressure+AND+scfa+AND+last+5+years'# Make HTTP request
response = requests.get(url)# Parse HTML response
soup = BeautifulSoup(response.content, 'html.parser')# Get list of articles
articles = soup.find_all('div', class_='rslt')# Loop through articles and download PDFs
for article in articles:
# Get article URL
article_url = article.find('p', class_='title').a['href'] # Make HTTP request
article_response = requests.get(article_url) # Parse HTML response
article_soup = BeautifulSoup(article_response.content, 'html.parser') # Get PDF URL
pdf_url = article_soup.find('div', id='dlabs_fulltext_section').ul.li.a['href'] # Download PDF
pdf_response = requests.get(pdf_url)
filename = pdf_url.split('/')[-1]
with open(os.path.join('pubmed_papers', filename), 'wb') as f:
f.write(pdf_response.content)# Stop timer
end_time = time.time()
print('Time taken: {} seconds'.format(end_time - start_time))