CSV file output is in Doctype HTML format

Question

I am using the below code to read the csv file from SharePoint. But in ouput i am getting DOCTYPE HTML format output.

Can anyone help me on this:- '''

from office365.runtime.auth.authentication_context import AuthenticationContext
from office365.sharepoint.client_context import ClientContext
from office365.sharepoint.files.file import File
import pandas as pd
import io
import requests


url = "https://sharepoint/AllItems.aspx"
fileurl = "/Shared Documents/folder/test.csv"
ctx_auth = AuthenticationContext(url)
ctx_auth.acquire_token_for_user("Username", "Password")   
ctx = ClientContext(url, ctx_auth)
web = ctx.web
ctx.load(web)
ctx.execute_query()
print('Authentication Successful')
response = File.open_binary(ctx, "Shared%20Documents%2FHCFM&FolderCTID=0x0120007B89818A32984B458F18252DBE2A2D40")
print(response.content)

''' i have "Authentication Successful" but in output getting DOCTYPE HTML format.

Please help. Thanks in advance!