## python 下载文件的多种方法汇总
#### **Requests**
```python
import requests
# 图片来自bing.com
url = 'https://cn.bing.com/th?id=OHR.DerwentIsle_EN-CN8738104578_400x240.jpg'
def requests_download():
content = requests.get(url).content
with open('pic_requests.jpg', 'wb') as file:
file.write(content)
```
#### **urllib**
```python
from urllib import request
# 图片来自bing.com
url = 'https://cn.bing.com/th?id=OHR.DerwentIsle_EN-CN8738104578_400x240.jpg'
def urllib_download():
request.urlretrieve(url, 'pic_urllib.jpg')
```
**urllib3**
```python
def urllib3_download():
# 创建一个连接池
poolManager = urllib3.PoolManager()
resp = poolManager.request('GET', url)
with open("pic_urllib3.jpg", "wb") as file:
file.write(resp.data)
resp.release_conn()
```
#### **wget**
```python
import wget
# 图片来自bing.com
url = 'https://cn.bing.com/th?id=OHR.DerwentIsle_EN-CN8738104578_400x240.jpg'
def wget_download():
wget.download(url, out='pic_wget.jpg')
```
