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Bug 1749103

Summary: rh-python36 cannot unpickle datetime.date objects [rhscl-3.3.z]
Product: Red Hat Software Collections Reporter: Charalampos Stratakis <cstratak>
Component: pythonAssignee: Python Maintainers <python-maint>
Status: CLOSED ERRATA QA Contact: Lukáš Zachar <lzachar>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rh-python36CC: cstratak, hhorak, lagordon, pviktori, python-maint, rhel-cs-apps-subsystem-qe, tborcin, torsava
Target Milestone: alphaKeywords: Reproducer
Target Release: 3.4   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: rh-python36-python-3.6.9-1.el6 rh-python36-python-3.6.9-1.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1724349 Environment:
Last Closed: 2019-11-06 09:45:37 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1724349    
Bug Blocks:    

Description Charalampos Stratakis 2019-09-04 21:48:49 UTC 
+++ This bug was initially created as a clone of Bug #1724349 +++

Description of problem:
======
rh-python36 has the following issue when unpickling date-objects stored in python 2:

Pickle a date in python 2:
    import datetime; pickle.dumps(datetime.date(2019, 12, 31), 2)
    '\x80\x02cdatetime\ndate\nq\x00U\x04\x07\xe3\x0c\x1fq\x01\x85q\x02Rq\x03.'
Unpickle in python3 fails:
    x = b'\x80\x02cdatetime\ndate\nq\x00U\x04\x07\xe3\x0c\x1fq\x01\x85q\x02Rq\x03.'; pickle.loads(x, encoding='latin1')  
    (...)
    TypeError: an integer is required (got type str)


Version-Release number of selected component (if applicable):
======
rh-python36 (Python 3.6.3)

How reproducible:
======
We're able to reproduce this ourselves

Steps to Reproduce:
======
1. $ python
Python 2.7.5 (default, Mar 26 2019, 22:13:06) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime; import pickle; pickle.dumps(datetime.date(2019, 12, 31), 2)
'\x80\x02cdatetime\ndate\nq\x00U\x04\x07\xe3\x0c\x1fq\x01\x85q\x02Rq\x03.'
>>> 

2. $ scl enable rh-python36 bash

3. $ python
Python 3.6.3 (default, Apr 10 2019, 14:37:36) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime; import pickle; x = b'\x80\x02cdatetime\ndate\nq\x00U\x04\x07\xe3\x0c\x1fq\x01\x85q\x02Rq\x03.'; pickle.loads(x, encoding='latin1')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: an integer is required (got type str)
>>>


Actual results:
======
b'\x80\x02cdatetime\ndate\nq\x00U\x04\x07\xe3\x0c\x1fq\x01\x85q\x02Rq\x03.'; pickle.loads(x, encoding='latin1')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: an integer is required (got type str)


Expected results:
======
'\x80\x02cdatetime\ndate\nq\x00U\x04\x07\xe3\x0c\x1fq\x01\x85q\x02Rq\x03.'


Additional info:
======
This has been fixed upstream: 
https://github.com/python/cpython/commit/19f6e83bf03b3ce22300638906bd90dd2dd5c463

--- Additional comment from RHEL Product and Program Management on 2019-06-26 22:27:06 CEST ---

Since this bug report was entered in Red Hat Bugzilla, the release flag has been set to ? to ensure that it is properly evaluated for this release.

--- Additional comment from Petr Viktorin on 2019-07-30 15:58:24 CEST ---

This should be fixed with a rebase to 3.6.9.
Comment 3 Lukáš Zachar 2019-11-04 11:34:13 UTC 
Verified by `test_compat_unpickle` in https://tcms.engineering.redhat.com/case/604054/?from_plan=26960#case_run
Comment 5 errata-xmlrpc 2019-11-06 09:45:37 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2019:3725