requests.post(url, data={'interests':'football','interests':'basketball'})
I tried this, but it is not working. How would I post football and basketball in the interests field?
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Take a lookieMooncrater– Mooncrater2020-05-27 11:33:44 +00:00Commented May 27, 2020 at 11:33
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5 Answers
Dictionary keys must be unique, you can't repeat them. You'd use a sequence of key-value tuples instead, and pass this to data:
requests.post(url, data=[('interests', 'football'), ('interests', 'basketball')])
Alternatively, make the values of the data dictionary lists; each value in the list is used as a separate parameter entry:
requests.post(url, data={'interests': ['football', 'basketball']})
Demo POST to http://httpbin.org:
>>> import requests
>>> url = 'http://httpbin.org/post'
>>> r = requests.post(url, data=[('interests', 'football'), ('interests', 'basketball')])
>>> r.request.body
'interests=football&interests=basketball'
>>> r.json()['form']
{u'interests': [u'football', u'basketball']}
>>> r = requests.post(url, data={'interests': ['football', 'basketball']})
>>> r.request.body
'interests=football&interests=basketball'
>>> r.json()['form']
{u'interests': [u'football', u'basketball']}
answered Apr 30, 2014 at 9:21
Martijn Pieters
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2 Comments
Martijn Pieters
@Bethlee: not sure why you'd ever do that. That's just being extra verbose, there is no advantage to using
files here unless you must send a multipart/form request, and you must strictly control the order of the fields and you have actual file data to send. Otherwise just use data=(('worker_ids[]', '66'), ('worker_ids[]', '67')).
Bethlee
@Martjin: Yes. You're right. I know it's not a good way but In my case the server-side was wrongfully coded. I used the answer without any choice. I just want to share the other ways. Thank you for your advice. I will delete the comment
It is possible to use urllib3._collections.HTTPHeaderDict as a dictionary that has multiple values under a key:
from urllib3._collections import HTTPHeaderDict
data = HTTPHeaderDict()
data.add('interests', 'football')
data.add('interests', 'basketball')
requests.post(url, data=data)
Comments
Quoting from the docs directly:
The data argument can also have multiple values for each key. This can be done by making data either a list of tuples or a dictionary with lists as values. This is particularly useful when the form has multiple elements that use the same key:
>>> payload_tuples = [('key1', 'value1'), ('key1', 'value2')] >>> r1 = requests.post('https://httpbin.org/post', data=payload_tuples) >>> payload_dict = {'key1': ['value1', 'value2']} >>> r2 = requests.post('https://httpbin.org/post', data=payload_dict) >>> print(r1.text) { ... "form": { "key1": [ "value1", "value2" ] }, ... } >>> r1.text == r2.text True
1 Comment
makkasi
This one worked for me, and I could use it with the "files" function parameter .
curl command string presents data as -d 'product_ids[]=719&product_ids[]=107'.
I was able to form the data array correctly by adding square brackets:
payload = [('product_ids[]', id) for id in ids_list]
response = requests.post(url, data=payload, headers=headers)
1 Comment
bfontaine
This has nothing to do with curl.
To post multiple values with the same key in Python requests, you need to use a list. For example, the following code will post the values football and basketball to the interests field:
import requests
url = "https://example.com/post"
data = {"interests": ["football", "basketball"]}
response = requests.post(url, data=data)
This will result in the following POST request:
POST /post HTTP/1.1
Host: example.com
Content-Type: application/x-www-form-urlencoded
interests=football&interests=basketball
