Requests Test failures (Fix)

The Fix

pip install requests==2.0.2

Based on closed psf/requests issue #1663

Production note: This usually shows up under retries/timeouts. Treat it as a side-effect risk until you can verify behavior with a canary + real traffic.

Jump to Verify

repro.py

def authenticate(self):
        url = 'http://site.com/signIn'
        data = { 'email': 'user', 'password': 'password'}
        rsession = requests.Session()
        rsession.post(url=url, data=data, verify=False)
        self.context.cookies = rsession.cookies
        rsession.close()


authenticate()
url = 'http://site.com/organizations.json'
resp = requests.get(url, cookies=self.context.cookies, verify=False)

verify

Re-run: python2.7 test_requests.py

fix.md

Option A — Upgrade to fixed release\npip install requests==2.0.2\nWhen NOT to use: Do not use if it changes public behavior or if the failure cannot be reproduced.\n\n

Why This Fix Works in Production

Trigger: $ python2.7 test_requests.py
Mechanism: That will be fixed in 2.0.2 by merging my pull request or some better way to fix it.
Why the fix works: That will be fixed in 2.0.2 by merging my pull request or some better way to fix it. (first fixed release: 2.0.2).

Production impact:

If left unfixed, this can cause silent data inconsistencies that propagate (bad cache entries, incorrect downstream decisions).

Why This Breaks in Prod

Shows up under Python 2.7 in real deployments (not just unit tests).
Surfaces as: $ python2.7 test_requests.py

Proof / Evidence

GitHub issue: #1663
First fixed release: 2.0.2
Reproduced locally: No (not executed)
Last verified: 2026-02-04
Confidence: 0.00
Did this fix it?: Yes (upstream fix exists)
Own content ratio: 0.15

Discussion

High-signal excerpts from the issue thread (symptoms, repros, edge-cases).

Jump to Sources Open on GitHub

“I think it seems to be fault of my commit as @sigmavirus24 said. I already attached pull request for that issue in #1713. That will…”

@daftshady · 2013-11-11 · confirmation · source

“Thanks for raising this! We've known about these test failures for a while”

@Lukasa · 2013-10-11 · source

“In fact if you run httpbin locally and point the tests at it, they will pass. :grinning:”

@sigmavirus24 · 2013-10-11 · source

“@Lukasa, I'm having similar issue right now: and this started to happen after 2.0.1 upgrade.”

@dmakhno · 2013-11-11 · source

Failure Signature (Search String)

$ python2.7 test_requests.py

Error Message

Stack trace

error.txt

Error Message
-------------
$ python2.7 test_requests.py
..EE..................................................................................
======================================================================
ERROR: test_DIGEST_AUTH_RETURNS_COOKIE (__main__.RequestsTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test_requests.py", line 285, in test_DIGEST_AUTH_RETURNS_COOKIE
    assert r.cookies['fake'] == 'fake_value'
  File "/tmp/requests/requests/cookies.py", line 256, in __getitem__
    return self._find_no_duplicates(name)
  File "/tmp/requests/requests/cookies.py", line 311, in _find_no_duplicates
    raise KeyError('name=%r, domain=%r, path=%r' % (name, domain, path))
KeyError: "name='fake', domain=None, path=None"

======================================================================
ERROR: test_DIGEST_AUTH_SETS_SESSION_COOKIES (__main__.RequestsTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test_requests.py", line 295, in test_DIGEST_AUTH_SETS_SESSION_COOKIES
    assert s.cookies['fake'] == 'fake_value'
  File "/tmp/requests/requests/cookies.py", line 256, in __getitem__
    return self._find_no_duplicates(name)
  File "/tmp/requests/requests/cookies.py", line 311, in _find_no_duplicates
    raise KeyError('name=%r, domain=%r, path=%r' % (
... (truncated) ...

Stack trace

error.txt

Error Message
-------------
File "/Library/Python/2.7/site-packages/requests/api.py", line 55, in get
    return request('get', url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/api.py", line 44, in request
    return session.request(method=method, url=url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 327, in request
    self.cookies = cookiejar_from_dict(cookies, cookiejar=self.cookies, overwrite=False)
  File "/Library/Python/2.7/site-packages/requests/cookies.py", line 410, in cookiejar_from_dict
    cookiejar.set_cookie(create_cookie(name, cookie_dict[name]))
  File "/Library/Python/2.7/site-packages/requests/cookies.py", line 256, in __getitem__
    return self._find_no_duplicates(name)
  File "/Library/Python/2.7/site-packages/requests/cookies.py", line 311, in _find_no_duplicates
    raise KeyError('name=%r, domain=%r, path=%r' % (name, domain, path))

Stack trace

error.txt

Error Message
-------------
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/nose/suite.py", line 208, in run
    self.setUp()
  File "/Library/Python/2.7/site-packages/nose/suite.py", line 291, in setUp
    self.setupContext(ancestor)
  File "/Library/Python/2.7/site-packages/nose/suite.py", line 314, in setupContext
    try_run(context, names)
  File "/Library/Python/2.7/site-packages/nose/util.py", line 469, in try_run
    return func()

  ... (my code trace goes here) it calls:
    resp = requests.get(url, cookies=self.context.cookies, verify=False)

  File "/Library/Python/2.7/site-packages/requests/api.py", line 55, in get
    return request('get', url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/api.py", line 44, in request
    return session.request(method=method, url=url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 327, in request
    self.cookies = cookiejar_from_dict(cookies, cookiejar=self.cookies, overwrite=False)
  File "/Library/Python/2.7/site-packages/requests/cookies.py", line 410, in cookiejar_from_dict
    cookiejar.set_cookie(create_cookie(name, cookie_dict[name]))
  File "/Library/Python/2.7/site-packages/requests/cookies.py", line 256, in __getitem__
    return self._find_no_duplicates(name)
  File "/Library/Python/2.7/site-packages/requests/cookies.py", line 311, in _find_no_duplicates
    raise KeyErr
... (truncated) ...

Minimal Reproduction

repro.py

def authenticate(self):
        url = 'http://site.com/signIn'
        data = { 'email': 'user', 'password': 'password'}
        rsession = requests.Session()
        rsession.post(url=url, data=data, verify=False)
        self.context.cookies = rsession.cookies
        rsession.close()


authenticate()
url = 'http://site.com/organizations.json'
resp = requests.get(url, cookies=self.context.cookies, verify=False)

Environment

Python: 2.7

Fix Options (Details)

Option A — Upgrade to fixed release Safe default (recommended)

pip install requests==2.0.2

When NOT to use: Do not use if it changes public behavior or if the failure cannot be reproduced.

Use when you can deploy the upstream fix. It is usually lower-risk than long-lived workarounds.

Fix reference: https://github.com/psf/requests/issues/1663

First fixed release: 2.0.2

When NOT to Use This Fix

Do not use if it changes public behavior or if the failure cannot be reproduced.

Verify Fix

verify

Re-run: python2.7 test_requests.py

Did This Fix Work in Your Case?

Quick signal helps us prioritize which fixes to verify and improve.

Prevention

Capture the exact failing error string in logs and tests so you can reproduce via a minimal script.
Pin production dependencies and upgrade only with a reproducible test that hits the failing path.

Version Compatibility Table

Version	Status
2.0.2	Fixed

Related Issues

No related fixes found.

Cluster: requests:data-consistency Requests hub Requests best practices All hubs All clusters

Related clusters: Configuration error SSL handshake Other

Sources

GitHub issue #1663

We don’t republish the full GitHub discussion text. Use the links above for context.

Requests Test failures (Fix)

The Fix

Why This Fix Works in Production

Why This Breaks in Prod

Proof / Evidence

Discussion

Failure Signature (Search String)

Error Message

Minimal Reproduction

Environment

Fix Options (Details)

Option A — Upgrade to fixed release Safe default (recommended)

Get updates

When NOT to Use This Fix

Verify Fix

Did This Fix Work in Your Case?

Prevention

Version Compatibility Table

Related Issues

Sources