Genorator Funtion stuck in first if clause, finite state machine

I am trying to write a function that will take me from one state to the next until I reach the final state. When I run this with:

new_location = change_location()

next(new_location)

The first iteration works but once I get into the while loop it never leaves the first if clause and also has no connection to the previous location. I am trying to move from one state to another where the states are e(only comes once at the start), da, dr, f, s, and ch (and ex) (only come at the end!). The paths they follow are always separated by 'to'.

I also tried having a yield statement after each clause but the desired pattern was still not followed. p are the probability weights that each path to the next location will be taken.

import numpy as np

def change_location():
        location = np.random.choice(['etof', 'etoda', 'etos', 'etodr'], 
                                          p =[0.377435, 0.287576, 0.181463, 0.153526])
        yield location
        while True:
            print(location)
            if location == 'etoda' or 'datoda' or 'drtoda'or 'ftoda' or 'stoda':
                location = np.random.choice(a=['datoch', 'datoda', 'datodr', 'datof', 'datos'], 
                p =[0.100000,0.740000,0.060000,0.050000,0.050000])
            elif location == 'etodr' or 'drtodr' or 'datodr' or 'ftodr' or 'stodr':
                location = np.random.choice(a=['drtoch', 'drtoda', 'drtodr','drtof', 'drtos'], 
                p =[0.215710, 0.010899, 0.598499, 0.087909,0.086983])
            elif location == 'etof' or 'datof' or 'drtof' or 'ftof' or 'stof':
                location = np.random.choice(a=['ftoch', 'ftoda', 'ftodr', 'ftof', 'ftos'], 
                p =[0.201605,0.095924,0.054847,0.596947,0.050677])
            elif location == 'etos' or 'datos' or 'drtos' or 'ftos' or 'stos':
                location = np.random.choice(a=['stoch', 'stoda', 'stodr', 'stof', 'stos'], 
                p =[0.150685,0.193214,0.163109,0.090953,0.402039])
            else:
                location = 'chtoex'
                break
            yield location