Python sends form-data data

Recently, when connecting to other interfaces, I need to send form-data data. I thought I would add the Content-Type to multipart/form-data in the headers. Maybe I was too naive. After adding it, I will add all the incoming data. It's gone, it's very painful. So I looked around for information, and finally found the following two plans, which were provided to comrades in need.

requests

• requests_toolbelt

  from requests_toolbelt import MultipartEncoder
  import requests
  
  m = MultipartEncoder(
    fields={'field0': 'value',
           'field1': 'value',
            'field2': ('文件名称', open('文件地址/file.py', 'rb'), 'text/plain')}
    )

r = requests.post('http://httpbin.org/post',

              data=m,
              headers={'Content-Type': m.content_type})

### urlib3
- encode_multipart_formdata

from urlib3 import encode_multipart_formdata
import requests

m = encode_multipart_formdata()

r = requests.post('http://httpbin.org/post',

              data=m[0],
              headers={'Content-Type': m[1]})