import gspread
from oauth2client.service_account import ServiceAccountCredentials

from pprint import pprint

scope = ["https://spreadsheets.google.com/feeds",'https://www.googleapis.com/auth/spreadsheets',"https://www.googleapis.com/auth/drive.file","https://www.googleapis.com/auth/drive"]

creds = ServiceAccountCredentials.from_json_keyfile_name("client_secret.json", scope)

client = gspread.authorize(creds)

sheet = client.open("Cohort 2020 Teacher Assessment").sheet1  # Open the spreadhseet

Error:
Traceback (most recent call last):
  File "C:\Users\charl\Desktop\Cohort 2020 Folder\spreadsheets.py", line 10, in <module>
    client = gspread.authorize(creds)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\gspread\__init__.py", line 38, in authorize
    client.login()
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\gspread\client.py", line 51, in login
    self.auth.refresh(http)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\oauth2client\client.py", line 545, in refresh
    self._refresh(http)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\oauth2client\client.py", line 749, in _refresh
    self._do_refresh_request(http)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\oauth2client\client.py", line 780, in _do_refresh_request
    body=body, headers=headers)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\oauth2client\transport.py", line 282, in request
    connection_type=connection_type)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\httplib2\__init__.py", line 1953, in request
    cachekey,
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\httplib2\__init__.py", line 1618, in _request
    conn, request_uri, method, body, headers
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\httplib2\__init__.py", line 1524, in _conn_request
    conn.connect()
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\site-packages\httplib2\__init__.py", line 1307, in connect
    self.sock = self._context.wrap_socket(sock, server_hostname=self.host)
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 412, in wrap_socket
    session=session
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 853, in _create
    self.do_handshake()
  File "C:\Users\charl\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 1117, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)