what's the difference between f(a) and f(*a)

[qxyuestc]

def sum1(*a): return(sum(i*i for i in a))
def sum2(a): return(sum(i*i for i in a))

a=[1,2,3]
print(sum1(*a), sum2(a))
####################################
showed above: the result from sum1() and sum2() is the same. So, what
is the difference between f(a) and f(*a)

 

[Marc 'BlackJack' Rintsch]

showed above: the result from sum1() and sum2() is the same. So, what is
the difference between f(a) and f(*a)

f(a) -> f([1, 2, 3])
f(*a) -> f(1, 2, 3)

Ciao,
Marc 'BlackJack' Rintsch

 

[Bruno Desthuilliers]

(e-mail address removed) a écrit :

def sum1(*a): return(sum(i*i for i in a))
def sum2(a): return(sum(i*i for i in a))

a=[1,2,3]
print(sum1(*a), sum2(a))
####################################
showed above: the result from sum1() and sum2() is the same. So, what
is the difference between f(a) and f(*a)

try this:

sum1(a)
sum2(*a)

Then re-read the FineManual(tm):
http://docs.python.org/tut/node6.html#SECTION006730000000000000000