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Get "requests.exceptions.SSLError" in sending requests to the dropbox api using flask application

I am trying to make requests to the dropbox api in my flask application. I am getting this error:
requests.exceptions.SSLError
The detail of error is as below:
Detailed Error message -
requests.exceptions.SSLError: >HTTPSConnectionPool(host='api.dropboxapi.com', port=443): Max retries >exceeded with url: /2/files/list_folder (Caused by >SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] >certificate verify failed: unable to get local issuer certificate >(_ssl.c:1129)')))
I understood SSl certificate is missing but how to establish one.
P.S. I am not using the requests python package
client = dropbox.Dropbox(dropbox_access_token)
print("[SUCCESS] dropbox account linked")
Error while executing this statement:
client.files_upload(open(computer_path, "rb").read(), dropbox_path)<-----
print("[UPLOADED] {}".format(computer_path))

Connecting with Python library using a proxy [duplicate]

This question already has answers here:
How to get around python requests SSL and proxy error?
(2 answers)
Python requests with proxy results in SSLError WRONG_VERSION_NUMBER
(2 answers)
Closed 2 years ago.
I am trying to connect to websites via proxies. I am using the python library requests.
proxies = {
"http": "http://x.x.x.x:pn",
"https": "https://x.x.x.x:pn"
}
request_result = requests.get("https://www.iplocation.net/find-ip-address", proxies=proxies)
These configuration is correct, according to the documentation. I have one proxy from a paid site and I have tried several others that are available on the web. I have also configured this proxies in the windows settings and used them in the browser, it works.
When making the request through Python I get this error:
requests.exceptions.SSLError: HTTPSConnectionPool(host='www.iplocation.net', port=443): Max retries exceeded with url: /find-ip-address (Caused by SSLError(SSLError(1, '[SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:852)'),))
This post says I should check the TLS-version, my environment support TLS 1.2. This post says I should have pyOpenSSL and idna installed, which I do. Why does it say unknown protocol, the request library should be able to connect with Https?
If change the url in the get() function to use the http protocol I sometimes receive:
(Caused by ProxyError('Cannot connect to proxy.', RemoteDisconnected('Remote end closed connection without response',)))
On other occasions I receive a 502 http response.
It is quite frustrating because it should be working. I understand it is a hard question to answer with limited information. Can you give me any suggestions of what might be wrong.

Python: SSLError, bad handshake, Unexpected EOF in get request

I'm having a problem trying to make a get request in a specific site using python.
My code:
import requests
url = 'https://www.beneficiossociais.caixa.gov.br/consulta/beneficio/04.01.00-00_00.asp'
r = requests.get(url, verify=False)
The error:
SSLError: HTTPSConnectionPool(host='www.beneficiossociais.caixa.gov.br', port=443): Max retries exceeded with url: /consulta/beneficio/04.01.00-00_00.asp (Caused by SSLError(SSLError("bad handshake: SysCallError(-1, 'Unexpected EOF')")))

The server you are trying to reach is practically broken. Apart from supporting long obsolete and insecure SSL 2 and SSL 3 and only supporting TLS 1.0 as kind of secure enough protocol version it only supports ciphers which are considered insecure or weak. Since these ciphers are disabled in Python and sometimes not even compiled into current OpenSSL versions (i.e. cannot be enabled with hacks like this) any TLS handshake with this broken server fails. Ignoring certificate errors as you do will not help since it is not a certificate problem which causes the handshake to fail but the lack of shared ciphers. For more see the SSLLabs report of this site.

SSLError("bad handshake") when trying to access resources Custom Certificates and Requests

I want to program webservices to exchange data in Python using Zeep. I can access services only with my certificate. I have a PFX certificate, but I converted it to two .pem files.
My code:
from zeep import Client
from zeep.wsse.signature import Signature
import requests
from requests import Session
key_filename ='/.files/cert.key.pem'
cert_filename = './files/cert.crt.pem'
session = Session()
r = requests.get('https:...../PingWs?wsdl',
cert=(cert_filename, key_filename))
print (r)
But I get
> raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='evidim-test.gov.si', port=443):
Max retries exceeded with url: /ws/test/PingWs?wsdl
(Caused by SSLError(SSLError("bad handshake: Error([('SSL routines',
'tls_process_server_certificate', 'certificate verify failed')],)",),))

Its an issue you will have to resolve by whitelisting the CA certificate used to sign the remote server certificate you are trying to connect to from your system settings. But for the purposes of testing out only, you can turn off the verification using:
r = requests.get('https:...../PingWs?wsdl',verify=False)
Don't use this in production.
Hope it helps!

This error almost certainly means that the remote endpoint is not signed with a certificate in your local certificate authority store.
You have two options:
Install the certificate in the CA store that requests uses. By default this is your local system CA store, at least as well as it can be determined by requests.
Configure a different set of certificates to be used on a requests session object.
As an example:
import requests.sessions
photon_requests_session = requests.sessions.Session()
photon_requests_session.verify = "/etc/photon/cacerts.pem"
Then I need to make sure that the server CA certificate is in /etc/photon/cacerts.pem.
I use this like:
r = photon_requests_session.get(url)

Python Requests Tableau REST API SSL Errors

I'm not overly familiar with how certs work, so I'm probably doing something dumb, apologies in advance.
I'm attempting to interact with tableau's rest API and do so using a secure connection, as some of their calls require this.
However, I'm running into various errors creating a connection.
I am able to create a insecure connection:
requests.get('https://tableau.mynetwork.lan', verify = False)
<Response [200]>
I am also able to create a secure connection with google:
requests.get('https://google.com', verify = True)
<Response [200]>
However, attempting to create a secure connection with my tableau server:
requests.get('https://tableau.mynetwork.lan', verify = True)
or:
requests.get('https://tableau.mynetwork.lan', verify = certifi.old_where())
Results in the following error:
SSLError: ("bad handshake: Error([('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",)
I have my tableau server certs on my local machine, and have attempted to pass them via the cert parameter:
tableau_cert = r"C:\tabcert.cer"
requests.get('https://tableau.mynetwork.lan', cert=tableau_cert, verify = True)
But get this error:
Error: [('PEM routines', 'PEM_read_bio', 'no start line'), ('SSL routines', 'SSL_CTX_use_certificate_file', 'PEM lib')]
Anyone have any pointers?

I have my tableau server certs on my local machine, and have attempted to pass them via the cert parameter:
requests.get('https://tableau.mynetwork.lan', cert=tableau_cert, verify = True)
cert is the wrong parameter to to specify the CA. The correct way according to the documentation is to set the path to your CA file as the value of the verify parameter:
requests.get('https://tableau.mynetwork.lan', verify=tableau_cert)
Also, make sure that the file you have is properly PEM encoded.