Fibonacci.py

def fibSequence():
    # Generates a fibonacci sequence with the size of ngi
    runFib = True
    while(runFib):
        n = int(input('How many numbers do you need? '))
        if n > 0 :
            runFib = False
            series = [1]

            while len(series) < n:
                if len(series) == 1:
                    series.append(1)
                else:
                    series.append(series[-1] + series[-2])

            for i in range(len(series)):  # Convert the numbers to strings
                series[i] = str(series[i])
        else:
            print('enter a valid number')

    return(', '.join(series))  # Return the sequence seperated by commas

print(fibSequence())