TypeError: cannot make memory view because object does not have the buffer interface

[alanhamlett]

This error happens when running braintree.Customer.create({'email': email}) where email is the user's email address.

Traceback (most recent call last):
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/flask_login.py", line 792, in decorated_view
    return func(*args, **kwargs)
  File "/opt/wakatime/current/app/api_v1.py", line 295, in post_users_current_payment_method
    app.current_user.update_payment_method(processor_type, **form.data)
  File "/opt/wakatime/current/app/models.py", line 924, in update_payment_method
    self.processor.update_payment_method(kwargs['token'])
  File "/opt/wakatime/current/app/models.py", line 3435, in update_payment_method
    'customer_id': self.customer.id,
  File "/opt/wakatime/current/app/models.py", line 3319, in customer
    self._customer = PaymentProcessor.get_customer(self.user, self.type)[0]
  File "/opt/wakatime/current/app/models.py", line 3294, in get_customer
    'email': user.email,
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer.py", line 102, in create
    return Configuration.gateway().customer.create(params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer_gateway.py", line 26, in create
    return self._post("/customers", {"customer": params})
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer_gateway.py", line 88, in _post
    response = self.config.http().post(self.config.base_merchant_path() + url, params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 49, in post
    return self.__http_do("POST", path, params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 72, in __http_do
    raise e
TypeError: cannot make memory view because object does not have the buffer interface

[alanhamlett]

I'm now passing wrap_http_exceptions=True to braintree.Configuration.configure to get a better error message. This is happening consistently for the same user.

[alanhamlett]

After wrapping http exceptions, I'm getting an UnexpectedError.

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "app/models.py", line 3378, in customer
    self._customer = PaymentProcessor.get_customer(self.user, self.type)[0]
  File "app/models.py", line 3353, in get_customer
    'email': user.email,
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer.py", line 102, in create
    return Configuration.gateway().customer.create(params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer_gateway.py", line 26, in create
    return self._post("/customers", {"customer": params})
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer_gateway.py", line 88, in _post
    response = self.config.http().post(self.config.base_merchant_path() + url, params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 49, in post
    return self.__http_do("POST", path, params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 70, in __http_do
    http_strategy.handle_exception(e)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 101, in handle_exception
    raise UnexpectedError(exception)
braintree.exceptions.unexpected_error.UnexpectedError: cannot make memory view because object does not have the buffer interface

[alanhamlett]

The traceback was lost because raise e does not preserve context. After getting the original traceback it looks like a bug in the requests library:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "app/models.py", line 3378, in customer
    self._customer = PaymentProcessor.get_customer(self.user, self.type)[0]
  File "app/models.py", line 3353, in get_customer
    'email': user.email,
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer.py", line 102, in create
    return Configuration.gateway().customer.create(params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer_gateway.py", line 26, in create
    return self._post("/customers", {"customer": params})
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/customer_gateway.py", line 88, in _post
    response = self.config.http().post(self.config.base_merchant_path() + url, params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 49, in post
    return self.__http_do("POST", path, params)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 67, in __http_do
    status, response_body = http_strategy.http_do(http_verb, full_path, self.__headers(), request_body)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/braintree/util/http.py", line 94, in http_do
    timeout=self.config.timeout
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/api.py", line 109, in post
    return request('post', url, data=data, json=json, **kwargs)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 468, in request
    resp = self.send(prep, **send_kwargs)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 576, in send
    r = adapter.send(request, **kwargs)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 370, in send
    timeout=timeout
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 559, in urlopen
    body=body, headers=headers)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 353, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python2.7/httplib.py", line 979, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python2.7/httplib.py", line 1013, in _send_request
    self.endheaders(body)
  File "/usr/lib/python2.7/httplib.py", line 975, in endheaders
    self._send_output(message_body)
  File "/usr/lib/python2.7/httplib.py", line 839, in _send_output
    self.send(message_body)
  File "/usr/lib/python2.7/httplib.py", line 811, in send
    self.sock.sendall(data)
  File "/opt/wakatime/current/venv/local/lib/python2.7/site-packages/requests/packages/urllib3/contrib/pyopenssl.py", line 216, in sendall
    data = memoryview(data)
TypeError: cannot make memory view because object does not have the buffer interface

[alanhamlett]

Related to kennethreitz/requests#2818, waiting on urllib3 to release this fix shazow/urllib3#719.

[po5i]

This is critical :-1:

[agfor]

@po5i Until a fixed version of requests is released, I'd suggest downgrading to a known-good version. If you're not on Google App Engine, any version before 2.8.0 should work.

[zagfai]

OMG. when could it be fixed.

[agfor]

@zagfai Please see my previous comment. A new version of requests -- 2.9.0 -- is expected soon, which should fix this issue. Until then, you'll need to downgrade to an older version of requests.

[alanhamlett]

Another way is fork requests, apply the patch to your fork, then install your fork in your requirements.txt:

-e git://github.com/<you>/requests.git@<hash>#egg=requests

[agfor]

@po5i @zagfai @alanhamlett

To close the loop -- requests 2.9.1 is out, and this issue should be resolved.

[alanhamlett]

Awesome, thanks!