A micropython file I drop on microcontrollers to attempt to connect to more than one wifi network.

wifi.py

import network
import time

# List of Wi-Fi SSIDs to try along with passwords.
ssid_list = ['wifi1', 'wifi2']  

#If possible, put passwords in a config_secrets.py file.
password_list = ['wifipw1', 'wifipw2']
# password_list = ['wifipw1', '']  # If one is open wifi network.


def connect_to_wifi(ssid, password):
    ''' 
    takes an ssid/password combo and attempts to connect to wireless
    ''' 
    station = network.WLAN(network.STA_IF)
    station.active(True)
    station.connect(ssid, password)
    print(f'Attempting connection to "{ssid}"...')
    
    for _ in range(10):  # Try to connect for 10 seconds
        if station.isconnected():
            print(f"Connected to {ssid}.")
            print("")
            return True
        time.sleep(1)
        
    else:
        print('Failed to connect to', ssid)
        station.disconnect()
        station.active(False)
        return False


def attempt_wifi_networks():
    ''' 
    Loops through a list of ssid/password combos and passes it off to connect.
    This allows me to have multiple ssid/passwords in my script
    '''
    
    for i in range(len(ssid_list)):
        ssid = ssid_list[i]
        password = password_list[i]
        if connect_to_wifi(ssid, password):
            return True
          
        else:
            print('No Wi-Fi networks available')
            return False

          
attempt_wifi_networks()