Python: HTTP POST Using Library “requests”

By Xah Lee. Date: . Last updated: .
# python 3

from urllib.parse import urlencode
from urllib.request import Request, urlopen

url = 'http://httpbin.org/post' # Set destination URL here
post_fields = {'foo': 'bar'}     # Set POST fields here

request = Request(url, urlencode(post_fields).encode())
json = urlopen(request).read().decode()
print(json)

# output

# {
#   "args": {},
#   "data": "",
#   "files": {},
#   "form": {
#     "foo": "bar"
#   },
#   "headers": {
#     "Accept-Encoding": "identity",
#     "Connection": "close",
#     "Content-Length": "7",
#     "Content-Type": "application/x-www-form-urlencoded",
#     "Host": "httpbin.org",
#     "User-Agent": "Python-urllib/3.6"
#   },
#   "json": null,
#   "origin": "172.10.232.224",
#   "url": "http://httpbin.org/post"
# }

Using Package Requests

Requests is a easy-to-use HTTP library, for Python.

“Requests” home page at

http://docs.python-requests.org/en/latest/

Python's standard urllib2 module provides most of the HTTP capabilities you need, but the API is thoroughly broken. It was built for a different time — and a different web. It requires an enormous amount of work (even method overrides) to perform the simplest of tasks.

install the package.

pip install requests

Here's a sample code using “requests”:

# -*- coding: utf-8 -*-
# python 2

import requests

r = requests.get('https://api.github.com', auth=('user', 'pass'))

print r.status_code
print r.headers['content-type']

# ------
# 200
# 'application/json'

Here's a sample code using standard Python lib “urllib2”.

# -*- coding: utf-8 -*-

import urllib2

gh_url = 'https://api.github.com'

req = urllib2.Request(gh_url)

password_manager = urllib2.HTTPPasswordMgrWithDefaultRealm()
password_manager.add_password(None, gh_url, 'user', 'pass')

auth_manager = urllib2.HTTPBasicAuthHandler(password_manager)
opener = urllib2.build_opener(auth_manager)

urllib2.install_opener(opener)

handler = urllib2.urlopen(req)

print handler.getcode()
print handler.headers.getheader('content-type')

# ------------------------------
# output

# 200
# 'application/json'

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Python

  1. Python 3 Basics
  2. Python 2 Basics
  3. Python 2 and 3 Difference
  4. Print Version
  5. Builtin Help
  6. Quote String
  7. String Methods
  8. Format String
  9. Operators
  10. Complex Numbers
  11. True, False
  12. if then else
  13. Loop
  14. List Basics
  15. Loop Thru List
  16. Map f to List
  17. Copy Nested List
  18. List Comprehension
  19. List Methods
  20. Sort
  21. Dictionary
  22. Loop Thru Dict
  23. Dict Methods
  24. Tuple
  25. Sets
  26. Function
  27. Closure
  28. 2 Closure
  29. Decorator
  30. Class
  31. Object, ID, Type
  32. List Modules
  33. Write a Module
  34. Unicode 🐍

Regex

  1. Regex Basics
  2. Regex Reference

Text Processing

  1. Read/Write File
  2. Traverse Directory
  3. File Path
  4. Process Unicode
  5. Convert File Encoding
  6. Find Replace in dir
  7. Find Replace by Regex
  8. Count Word Frequency

Web

  1. Send Email
  2. GET Web Page
  3. Web Crawler
  4. HTTP POST

Misc

  1. JSON
  2. Find Script Path
  3. Get Env Var
  4. System Call
  5. Decompress Gzip
  6. Append String in Loop
  7. Timing f timeit
  8. Keyword Arg Default Value Unstable
  9. Check Page Load Size
  10. Thumbnail Generation