how to make 2 lights blink with the gpio pins with python

1import RPi.GPIO as GPIO # IMPORTANT: remember to change the gpio pin (18) also it needs to be programmed in Thonny Python IDE
2import time #used in raspberry pi model 4
3
4GPIO.setwarnings(False) #NOTE: raspberry pi could be updated, and you might need to change your code
5GPIO.setmode(GPIO.BCM) 
6GPIO.setup(18, GPIO.OUT)
7
8
9while True:
10      GPIO.output(18, True) 
11      time.sleep(1) 
12      GPIO.output(18, False) 
13      time.sleep(1) 

1while True:
2    import RPi.GPIO as GPIO
3    import time
4    
5    x = (0.3)
6    
7    GPIO.setmode(GPIO.BOARD)
8    GPIO.setup(3, GPIO.OUT)
9    GPIO.setup(5, GPIO.OUT)
10    
11    GPIO.output(3, GPIO.LOW)
12    GPIO.output(5, GPIO.HIGH)
13    time.sleep(x)
14    GPIO.output(3,GPIO.HIGH)
15    GPIO.output(5, GPIO.LOW)
16    time.sleep(x)
17    
18GPIO.cleanup()
19