I see I see... well, this might come in handy:

def getActiveVests(hiveaccess, accountname):
    try:
        account = Account(accountname, steem_instance=hiveaccess)
        allVests = float(account.get("vesting_shares"))
        delegatedVests = float(account.get("delegated_vesting_shares"))
        receivedVests = float(account.get("received_vesting_shares"))
        activeVests = allVests - delegatedVests + receivedVests
    except Exception as inst:
        print("hiveaccess OP ERROR on fetching account active VESTS")
        print(type(inst))
        print(inst.args)
        return False
    else:
        return activeVests

def getVotingPower(hiveaccess, accountname):
    try:
        account = Account(accountname, steem_instance=hiveaccess)
    except Exception as inst:
        print("hiveaccessOP ERROR on get_account")
        print(type(inst))
        print(inst.args)
        return False    
    else:
        votingpower = (account.vp)*100
        if votingpower > 10000:
            votingpower = 10000
        return votingpower

def getVoteWeightForRshares(hiveaccess, username, rshares):
    try:
        vests = getActiveVests(hiveaccess, username)
        power = getVotingPower(hiveaccess, username)
        weight = (rshares+50000000-98*vests)/(2*vests*power)
    except Exception as inst:
        print("hiveaccess OP ERROR on calculating vote-weight for target rshares")
        print(type(inst))
        print(inst.args)
        return False
    else:
        return weight*100

those will require to also from beem.account import Account first