Decorator

[muru kessan]

Hi guys,
    Is there a difference between accessing decorators via '@' symbol and
hard coding that ? esp when the function passed to the decorator is a
recursive one?

See attachments
result from deco_with@ is
1 1 0 1 1 0 1 1 0

result from deco_without@ is
1 1 2 3 5 8 13 21 34
1 1 0 3 5 0 13 21 0

Thanks ,
muru
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#-------------------------------------------------------------------------------
# Name:        module1
# Purpose:
#
# Author:      Ratna
#
# Created:     20/03/2014
# Copyright:   (c) Ratna 2014
# Licence:     <your licence>
#-------------------------------------------------------------------------------
import math

def isOddMy(func):
    def innerOdd(x):
        y = func(x)
        if math.fmod(y, 2) == 0 :
            return 0
        else:
            if y is not None:
                 return y
            else:
                 return 0
    return innerOdd

@isOddMy
def fib(n):
    #print n,
    if n == 0 :
        return 0
    elif n == 1 :
        return 1
    else:
        return fib(n-2) + fib(n-1)


def main():
    #oddFibi = isOdd(fib)
    #print [i for i in oddFibi(100)]
    for i in range(1,10):
        print fib(i),

    '''print
    fib1 = isOddMy(fib)
    for i in range(1,10):
        print fib1(i),'''

if __name__ == '__main__':
    main()
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#-------------------------------------------------------------------------------
# Name:        module1
# Purpose:
#
# Author:      Ratna
#
# Created:     20/03/2014
# Copyright:   (c) Ratna 2014
# Licence:     <your licence>
#-------------------------------------------------------------------------------
import math

def isOddMy(func):
    def innerOdd(x):
        y = func(x)
        if math.fmod(y, 2) == 0 :
            return 0
        else:
            if y is not None:
                 return y
            else:
                 return 0
    return innerOdd

#@isOddMy
def fib(n):
    #print n,
    if n == 0 :
        return 0
    elif n == 1 :
        return 1
    else:
        return fib(n-2) + fib(n-1)


def main():
    #oddFibi = isOdd(fib)
    #print [i for i in oddFibi(100)]
    for i in range(1,10):
        print fib(i),

    print
    fib1 = isOddMy(fib)
    for i in range(1,10):
        print fib1(i),

if __name__ == '__main__':
    main()