import network
import time

def connect_wifi(ssid, password, hostname):
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.config(hostname=hostname)
    wlan.connect(ssid, password)

    for _ in range(10):
        if wlan.isconnected():
            return wlan
        time.sleep(1)

    raise RuntimeError("WiFi connection failed")