>>> import network
>>> import time
>>> ssid="CERROAZULNET"
>>> clave="19861986"
>>> wlan = network.WLAN(network.STA_IF)
>>> wlan.active(True)
>>> wlan.connect(ssid, clave)
>>> wlan.isconnected()
True

>>> import urequests
>>> def cargaArchivo(url):
...     lista=url.split('/')
...     with open(lista[len(lista)-1], 'w') as f:
...         f.write(urequests.get(url).text)
...