QasimK

    #!/usr/bin/python
    import random
    from collections import Counter
    
    def experiment():
        urn = random.choices(["R", "G"], k=100)
        if urn.pop() != "R":
            return
    
        return urn.pop()
    
    results = (experiment() for i in range(1_000_000))
    results = (result for result in results if result is not None)
    print(Counter(results))

    #!/usr/bin/python
    import random
    from collections import Counter
    
    def experiment():
        num_red = random.randint(1, 100)
        num_green = 100 - num_red
        urn = ["R"] * num_red + ["G"] * num_green
        random.shuffle(urn)
        if urn.pop() != "R":
            return
    
        return urn.pop()
    
    results = (experiment() for i in range(1_000_000))
    results = (result for result in results if result is not None)
    print(Counter(results))