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Need some help here. I am trying to send a JWT token with header in my request. When i directly copy paste the token in the request (line 6) its working fine. Where as when i concatenate as string and send (line 3 & 5) it throwing error. But when print the token its having the correct token value.THe error i have pasted below after the code

response = requests.post("some URL")
token = response.text
header_content = "{'Authorization': 'Bearer "+token+"'}"
print(header_content)
response = requests.get(url, headers=header_content)
#response = requests.get(url, headers = {'Authorization': 'Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1bmlxdWVfbmFtZSI6ImhjbF9yZXBvcnRpbmcuc2VydmljZWFjY291bnRAc2x1LnRlYW1keW5hbWl4LmNvbSIsInRkeF9lbnRpdHkiOiIyIiwidGR4X3BhcnRpdGlvbiI6IjcwIiwiaXNzIjoiVEQiLCJhdWQiOiJodHRwczovL3d3dy50ZWFtZHluYW1peC5jb20vIiwiZXhwIjoxNjIyOTgyNzg5LCJuYmYiOjE2MjI4OTYzODl9.82FuBtybRBk3Ot-whKYEXw2yFeNXBp566MubEA9G-BE'})

the error i am seeing is

Traceback (most recent call last):
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\Rest_Testing.py", line 24, in <module>
response = requests.get(url, headers=header_content)
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\venv\lib\site-packages\requests\api.py", line 76, in get
return request('get', url, params=params, **kwargs)
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\venv\lib\site-packages\requests\api.py", line 61, in request
return session.request(method=method, url=url, **kwargs)
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\venv\lib\site-packages\requests\sessions.py", line 528, in request
prep = self.prepare_request(req)
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\venv\lib\site-packages\requests\sessions.py", line 456, in prepare_request
p.prepare(
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\venv\lib\site-packages\requests\models.py", line 317, in prepare
self.prepare_headers(headers)
File "C:\Users\prasannakumaravel\PycharmProjects\SLU_DailyReport_Automation\venv\lib\site-packages\requests\models.py", line 449, in prepare_headers
for header in headers.items():
AttributeError: 'str' object has no attribute 'items'
Prasanna K
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3 Answers3

3

header_content should be a dictionary not string

Change this

header_content = "{'Authorization': 'Bearer "+token+"'}"

to

header_content = {'Authorization': "Bearer "+token}

You can trace that from error Traceback :

for header in headers.items():
AttributeError: 'str' object has no attribute 'items'

.items() is an attribute for a dictionary not string which returns a list of tuple pair :

In your case header.items() is

[('Authorization', 'Bearer your_token')]
Prakhar
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  • header_content = {'Authorization': 'Bearer "+token+"'} Not working. token variable is not replacing with values not sure how to solve this – Prasanna K Jun 05 '21 at 16:20
  • i made this happen by below
    `value = "Bearer "+token header_content = {'Authorization': value} print(header_content) response = requests.get(url, headers=header_content)`
    This worked     – Prasanna K Jun 05 '21 at 16:28
  • Yup! my bad, i didn't focused on that part, anyway that's a small fix which you yourself have made it. Cheers! – Prakhar Jun 05 '21 at 16:39
1

the issue here is requests is expecting a dictionary, not a string that resembles a python dictionary. in the 2nd last line of the error messages it shows for header in headers.items(): which is a python dictionary method. to address this problem u can use json module from python.

import json
header_content = '{"Authorization": "Bearer " + "some_token"}'
header_content = dict(json.loads(header_content)
response = requests.get(url, headers = header_content)

Note: for some reason json requires the contents enclosed with " instead of '.

mushcatshiro
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  • hi thanks for your help. But i am appending the token variable in run time with the Authorization: Bearer Token...Not sure how to append. Your code is throwing error raise TypeError(f'the JSON object must be str, bytes or bytearray, ' TypeError: the JSON object must be str, bytes or bytearray, not dict – Prasanna K Jun 05 '21 at 16:17
  • `'{"Authorization": "Bearer "' + some_token + '}'` – mushcatshiro Jun 05 '21 at 23:41
0

I am not quite sure what framework you use, but usually there is a separate function to add headers, instead of just adding them as a string.

According to this answer, in Python with urllib2 it would be:

import urllib2
req = urllib2.Request('http://www.example.com/')
req.add_header('Referer', 'http://www.python.org/')
resp = urllib2.urlopen(req)
content = resp.read()

For node.js with express it is explained in this answer.

Felix Dolderer
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