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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 GPIO Introduction
First order of business is to import some libraries to help send/receive signals to/from the GPIO pins of the Raspberry Pi.
Step1:  The following code will set the mode to a Broadcom pin layout (which seems to be what we want), and set up our GPIO pin 25 as an output pin.
Step2:  Lighting an LED
Step3:  Multiple LEDs
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Python Code:
import RPi.GPIO as GPIO
import time
Explanation: GPIO Introduction
First order of business is to import some libraries to help send/receive signals to/from the GPIO pins of the Raspberry Pi.
End of explanation
GPIO.setmode(GPIO.BCM)
Explanation: The following code will set the mode to a Broadcom pin layout (which seems to be what we want), and set up our GPIO pin 25 as an output pin.
End of explanation
outpin = 25
GPIO.setup(outpin, GPIO.OUT)
GPIO.output(outpin, True)  # Let there be light
GPIO.output(outpin, False)  # Turn it off
Explanation: Lighting an LED
End of explanation
outpins = [25, 26]
for pin in outpins:
    GPIO.setup(pin, GPIO.OUT)
for pin in outpins:
    GPIO.output(pin, True) # hello world?
    time.sleep(0.2)        # a bit of delay between lighting each LED
for pin in outpins:
    GPIO.output(pin, False) # goodbye world?
    time.sleep(0.2)
for i in range(20):
    for pin in outpins:
        GPIO.output(pin, True) # hello world?
        time.sleep(0.2)        # a bit of delay between lighting each LED
    for pin in outpins:
        GPIO.output(pin, False) # goodbye world?
        time.sleep(0.2)
GPIO.cleanup()
Explanation: Multiple LEDs
End of explanation
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