Fibonaci sequence

[shing]

I've always thought it would be great to have a program that automatically shows large sequences of the Fibonacci sequence...so far i have

a, b = 0, 1
while b < 1000:
print b
    a, b = b, a+b
 

I want the program to show: "Sequence 1: 1". Sequence 2: "1", Sequence 3: "2", Sequence 4: "3", etc etc...

Does anybody know how I can do this? Also, I want the program to ask "What sequence do you wish to know?"

And then if i type, "61", it will show the 61th sequence of the Fibo. Series.

Thanks.

[elcron]

I've always thought it would be great to have a program that automatically shows large sequences of the Fibonacci sequence...so far i have

a, b = 0, 1
while b < 1000:
print b
    a, b = b, a+b
 

I want the program to show: "Sequence 1: 1". Sequence 2: "1", Sequence 3: "2", Sequence 4: "3", etc etc...

Does anybody know how I can do this? Also, I want the program to ask "What sequence do you wish to know?"

And then if i type, "61", it will show the 61th sequence of the Fibo. Series.

Thanks.

you could store it in a list and use the index

>>> def fib(maxNum=1000):
    a, b = 0, 1
    li = [b]
    while b < 1000:
        a, b = b, a+b
        li.append(b)
    return li
 
>>> fibNums = fib()
>>> fibNums
[1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597]
>>> for i in range(len(fibNums)):
    print "Sequence %s: %s"%(i+1, fibNums[i])
Sequence 1: 1
Sequence 2: 1
Sequence 3: 2
Sequence 4: 3
Sequence 5: 5
Sequence 6: 8
Sequence 7: 13
Sequence 8: 21
Sequence 9: 34
Sequence 10: 55
Sequence 11: 89
Sequence 12: 144
Sequence 13: 233
Sequence 14: 377
Sequence 15: 610
Sequence 16: 987
Sequence 17: 1597
>>> def printSeq():
    seqID = False
    while not seqID:
        seqID = raw_input("What sequence do you want? ")
        if not seqID in [str(i) for i in range(1, len(fibNums) + 1)]: # +1 because range goes to max - 1
            print "Must be a number in the range of 1-%s"%len(fibNums)
            seqID = False
        else:
            seqID = int(seqID)
    print "Sequence %s: %s"%(seqID, fibNums[seqID-1])
>>> printSeq()
What sequence do you want? elcron
Must be a number in the range of 1-17
What sequence do you want? 0
Must be a number in the range of 1-17
What sequence do you want? 18
Must be a number in the range of 1-17
What sequence do you want? 17
Sequence 17: 1597