In [1]:

    

def fib(n):
    if n == 1:
        return [1]
    if n == 2:
        return [1,1]
    fibs = [1,1]
    for i in range(2,n):
        fibs.append(fibs[-1]+fibs[-2])
    return fibs

print (fib(20))


    

    




[1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765]

In [2]:

    

print ("Hello")


    

    




Hello

In [3]:

    

print (1+2)


    

    




3

In [ ]: