python文件下载

downloadfile.py

import requests

# 下载普通文件
def download_file():
  image_url = "https://www.python.org/static/community_logos/python-logo-master-v3-TM.png"
  
  r = requests.get(image_url) # create HTTP response object
  
  with open("python_logo.png",'wb') as f:
      f.write(r.content)


# 下载大文件，减小内存占用，切片形式下载
def download_bigfile():
  file_url = "http://codex.cs.yale.edu/avi/db-book/db4/slide-dir/ch1-2.pdf"
  
  r = requests.get(file_url, stream=True)
  
  with open("python.pdf", "wb") as pdf:
      for chunk in r.iter_content(chunk_size=1024):
          if chunk:
              pdf.write(chunk)