如何使用python请求库从Web下载PDF文件

如何解决如何使用python请求库从Web下载PDF文件

尝试使用请求模块从网站下载一些pdf文件，但是我仍然在下面列出此错误。我看到一些帖子，他们提到它们将response.content用于pdf文件而不是response.text，但是它仍然会产生错误。不确定如何解决此问题。

示例链接：https://corporate.exxonmobil.com/-/media/Global/Files/worldwide-giving/2018-Worldwide-Giving-Report.pdf

def scrape_website(link):
        
    try:
        print("getting content")
        cert = requests.certs.where()
        page = requests.get(link,verify=cert,headers={"User-Agent": "Mozilla/5.0 (X11; CrOS x86_64 12871.102.0) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/81.0.4044.141 Safari/537.36"})
        
        print(page)
        if ".pdf" in link:
            print("the content is a pdf file. downloading..")
     

            return page.content
        
        return page.text

    except Exception as x:
        print(x)
        return ''

statement_page = scrape_website(link)


with open(filepath,'w+',encoding="utf-8") as f: 
        print("writing page")
        f.write(statement_page)
        f.close()


    <ipython-input-42-1e4771d32073> in save_html_page(page,path,filename)
     13         with open(filepath,encoding="utf-8") as f:
     14             print("writing page")
---> 15             f.write(page)
     16             f.close()
     17 

TypeError: write() argument must be str,not bytes

解决方法

有时我也需要以编程方式下载内容。我只是用这个：

import requests

response = requests.get("https://link_to_thing.pdf")
file = open("myfile.pdf","wb")
file.write(response.content)
file.close()

,

这里是我曾经使用的示例，当您尝试下载大型pdf文件时，它非常方便：

import requests
import sys

url = 'url'
filename = 'filename'
# creating a connection to the pdf
print("Creating the connection ...")
with requests.get(url,stream=True) as r:
    if r.status_code != 200:
        print("Could not download the file '{}'\nError Code : {}\nReason : {}\n\n".format(
            url,r.status_code,r.reason),file=sys.stderr)
    else:
        # Storing the file as a pdf
        print("Saving the pdf file  :\n\"{}\" ...".format(filename))
        with open(filename,'wb') as f:
            try:
                total_size = int(r.headers['Content-length'])
                saved_size_pers = 0
                moversBy = 8192*100/total_size
                for chunk in r.iter_content(chunk_size=8192):
                    if chunk:
                        f.write(chunk)
                        saved_size_pers += moversBy
                        print("\r=>> %.2f%%" % (
                            saved_size_pers if saved_size_pers <= 100 else 100.0),end='')
                print(end='\n\n')
            except Exception:
                print("==> Couldn't save : {}\\".format(filename))
                f.flush()
                r.close()
        r.close()

它使用：iter_content()下载并通过chunck保存pdf块。