Bengt Richter wrote:
>>is it possible to pass parameters to a decorator function?
>>
> Yes, but then the function must return the same kind of thing
> a bare decorator-function name would have, which is a function
> able to take a single argument of a function and return a function.
>
> So your decorator won't take f as an argument, just the optional
> logfile, and it will return a function that does the wrapping like the
> original decorator.
This sounds to me like something that should be done using a decorator.
e.g. (everything from 'def timelogger' onwards is unchanged from the OP's
code):
def decoratorwithargs(f):
def wrapper(*args,**kw):
def inner(target):
return f(target, *args, **kw)
return inner
return wrapper
@decoratorwithargs
def timelogger(f, logfile=sys.stdout):
def wrapper(*a,**kw):
logfile.write("started at %s" % time.ctime())
t0 = time.time()
f(*a, **kw)
t1 = time.time()
logfile.write("ended at %s" % time.ctime())
logfile.write("diff = %f %s" % (t1-t0, "sec"))
return wrapper
@timelogger(file("hierher", "a")) ### <<<<<< (1)
def loops(a,b,c):
sum = 0
for i in range(a):
for j in range(b):
for k in range(c):
sum += 1
(I think the logfile output could do with some newlines.)
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