from machine 
from utime 

led=machine.PWM(machine.Pin(5))
led1=machine.PWM(machine.Pin(9))
led.Freq(1000)
led1.Freq(1000)

for brightness in range(0,65535,50):
    led.duty_u16(brightness)
    utime.sleep_ms(10)
     led1.duty_u16(brightness)
    utime.sleep_ms(10)

led.duty_u16(0)
led1.duty_u16(0)