Interactive Authentication to Microsoft Graph using MSAL with Python and Delegated Permissions. See associated blogpost https://blog.darrenjrobinson.com/interactive-authentication-to-microsoft-graph-using-msal-with-python-and-delegated-permissions/

Interactive MSAL AAD Delegated AuthN.py

import msal
import jwt
import json
import sys
import requests
from datetime import datetime
from msal_extensions import *

# Microsoft Azure PowerShell Client ID
clientID = '1950a258-227b-4e31-a9cf-717495945fc2'
scopes= ["https://management.azure.com/user_impersonation"]
username = input('Enter your Azure AD username: ')

tenantID = username.split('@')[1]
authority = 'https://login.microsoftonline.com/' + tenantID

result = None
tokenExpiry = None
accounts = None 
myAccount = None 

def msal_persistence(location, fallback_to_plaintext=False):
    """Build a suitable persistence instance based your current OS"""
    if sys.platform.startswith('win'):
        return FilePersistenceWithDataProtection(location)
    if sys.platform.startswith('darwin'):
        return KeychainPersistence(location, "my_service_name", "my_account_name")
    return FilePersistence(location)

def msal_cache_accounts(clientID, authority):
    # Accounts
    persistence = msal_persistence("token_cache.bin")
    print("Is this MSAL persistence cache encrypted?", persistence.is_encrypted)
    cache = PersistedTokenCache(persistence)
    
    app = msal.PublicClientApplication(client_id=clientID, authority=authority, token_cache=cache)
    accounts = app.get_accounts()
    return accounts

def msal_delegated_refresh(clientID, scopes, authority, account):
    persistence = msal_persistence("token_cache.bin")
    cache = PersistedTokenCache(persistence)
    
    app = msal.PublicClientApplication(
        client_id=clientID, authority=authority, token_cache=cache)
    result = app.acquire_token_silent_with_error(
        scopes=scopes, account=account)
    return result

def msal_delegated_refresh_force(clientID, scopes, authority, account):
    persistence = msal_persistence("token_cache.bin")
    cache = PersistedTokenCache(persistence)
    
    app = msal.PublicClientApplication(
        client_id=clientID, authority=authority, token_cache=cache)
    result = app.acquire_token_silent_with_error(
        scopes=scopes, account=account, force_refresh=True)
    return result

def msal_delegated_interactive_flow(scopes, prompt=None, login_hint=None, domain_hint=None, claims_challenge=None, timeout=None, port=None, extra_scopes_to_consent=None):
    print("Initate an Interactive Flow (auth via Browser) to get AAD Access and Refresh Tokens.")
    
    persistence = msal_persistence("token_cache.bin")
    cache = PersistedTokenCache(persistence)
    
    app = msal.PublicClientApplication(client_id=clientID, authority=authority, token_cache=cache)
    result = app.acquire_token_interactive(scopes=scopes, prompt=None, login_hint=login_hint, domain_hint=domain_hint )
    return result

def msal_jwt_expiry(accessToken):
    decodedAccessToken = jwt.decode(accessToken, verify=False)
    accessTokenFormatted = json.dumps(decodedAccessToken, indent=2)

    # Token Expiry
    tokenExpiry = datetime.fromtimestamp(int(decodedAccessToken['exp']))
    print("Token Expires at: " + str(tokenExpiry))
    return tokenExpiry

def msgraph_request(resource, requestHeaders):
    # Request
    results = requests.get(resource, headers=requestHeaders).json()
    return results

accounts = msal_cache_accounts(clientID, authority)

if accounts:
    for account in accounts:
        if account['username'] == username:
            myAccount = account
            print("Found account in MSAL Cache: " + account['username'])
            print("Attempting to obtain a new Access Token using the Refresh Token")
            result = msal_delegated_refresh(clientID, scopes, authority, myAccount)

            if result is None:
                # Get a new Access Token using the Interactive Flow
                print("Interactive Authentication required to obtain a new Access Token.")
                result = msal_delegated_interactive_flow(scopes=scopes, domain_hint=tenantID, login_hint=username)   
else:
    # No accounts found in the local MSAL Cache
    # Trigger interactive authentication flow
    print("First authentication for " +account['username'])
    result = msal_delegated_interactive_flow(scopes=scopes, domain_hint=tenantID, login_hint=username)

if result:
    if result["access_token"]:
        msal_jwt_expiry(result["access_token"])
    
        # Query AAD for tenants the AAD User is Federated too
        requestHeaders = {'Authorization': 'Bearer ' + result["access_token"],'Content-Type': 'application/json'}
        queryResults = msgraph_request("https://management.azure.com/tenants?api-version=2020-01-01",requestHeaders)
        print(json.dumps(queryResults, indent=2))
else:
    # User not found in MSAL Cache
    # Trigger interactive authentication flow
    print("First authentication for " +account['username'])
    result = msal_delegated_interactive_flow(scopes=scopes, domain_hint=tenantID, login_hint=username)

    if result["access_token"]:
        msal_jwt_expiry(result["access_token"])

        # Query AAD for tenants the AAD User is Federated too
        requestHeaders = {'Authorization': 'Bearer ' + result["access_token"],'Content-Type': 'application/json'}
        queryResults = msgraph_request("https://management.azure.com/tenants?api-version=2020-01-01",requestHeaders)
        print(json.dumps(queryResults, indent=2))