[issue37361] urllib3: TypeError: unsupported operand type(s) for -=: 'Session' and 'int' in Retry class

[SilentGhost]

Change by SilentGhost :


--
resolution:  -> not a bug
type:  -> behavior

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[issue37361] urllib3: TypeError: unsupported operand type(s) for -=: 'Session' and 'int' in Retry class

[Andreas Jung]

Andreas Jung  added the comment:

invalid

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[issue37361] urllib3: TypeError: unsupported operand type(s) for -=: 'Session' and 'int' in Retry class

[Andreas Jung]

Change by Andreas Jung :


--
stage:  -> resolved
status: open -> closed

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[issue37361] urllib3: TypeError: unsupported operand type(s) for -=: 'Session' and 'int' in Retry class

[Andreas Jung]

New submission from Andreas Jung :

Python 3.7.3

The following code is support to add a retry to the requests module.

"total" is correctly initialized with 5 here but internally self.total becomes 
an instation of "Session"


import requests
from requests.adapters import HTTPAdapter
from requests.packages.urllib3.util.retry import Retry


def requests_retry_session(
retries=5,
backoff_factor=5,
status_forcelist=(500, 502, 504),
):
session = requests.Session()
retry = Retry(
total=retries,
backoff_factor=backoff_factor,
status_forcelist=status_forcelist,
)
import pdb; pdb.set_trace()
print(retry.total)
adapter = HTTPAdapter(max_retries=retry)
session.mount('http://', adapter)
session.mount('https://', adapter)
return session


s = requests.Session()
response = requests_retry_session(s).get('https://www.foo.com/')
print(response.status_code)

Traceback (most recent call last):
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/connectionpool.py",
 line 600, in urlopen
chunked=chunked)
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/connectionpool.py",
 line 343, in _make_request
self._validate_conn(conn)
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/connectionpool.py",
 line 839, in _validate_conn
conn.connect()
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/connection.py",
 line 344, in connect
ssl_context=context)
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/util/ssl_.py",
 line 347, in ssl_wrap_socket
return context.wrap_socket(sock, server_hostname=server_hostname)
  File "/opt/python-3.7.3/lib/python3.7/ssl.py", line 412, in wrap_socket
session=session
  File "/opt/python-3.7.3/lib/python3.7/ssl.py", line 853, in _create
self.do_handshake()
  File "/opt/python-3.7.3/lib/python3.7/ssl.py", line 1117, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate 
verify failed: self signed certificate (_ssl.c:1056)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "bin/zopepy", line 303, in 
exec(compile(__file__f.read(), __file__, "exec"))
  File "foo.py", line 28, in 
response = requests_retry_session(s).get('https://www.foo.com/')
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/requests-2.21.0-py3.7.egg/requests/sessions.py",
 line 546, in get
return self.request('GET', url, **kwargs)
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/requests-2.21.0-py3.7.egg/requests/sessions.py",
 line 533, in request
resp = self.send(prep, **send_kwargs)
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/requests-2.21.0-py3.7.egg/requests/sessions.py",
 line 646, in send
r = adapter.send(request, **kwargs)
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/requests-2.21.0-py3.7.egg/requests/adapters.py",
 line 449, in send
timeout=timeout
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/connectionpool.py",
 line 638, in urlopen
_stacktrace=sys.exc_info()[2])
  File 
"/home/ajung/sandboxes/ugent-portaal-plone-4x/eggs/urllib3-1.24.2-py3.7.egg/urllib3/util/retry.py",
 line 348, in increment
total -= 1
TypeError: unsupported operand type(s) for -=: 'Session' and 'int'

--
components: Library (Lib)
messages: 346208
nosy: ajung
priority: normal
severity: normal
status: open
title: urllib3: TypeError: unsupported operand type(s) for -=: 'Session' and 
'int' in Retry class
versions: Python 3.7

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