python - Logging execution time with decorators -

after tried unsuccessfully while, seeking miraculous website. problem: want create decorator writes elapsed execution time of function (during execution of function) logging file like:

@log_time("log.txt", 35) def some_function(...):     ...     return result 

and

from functools import wraps  def log_time(path_to_logfile, interval):     ... 

so log.txt like

time elapsed: 0h 0m 35s time elapsed: 0h 1m 10s time elapsed: 0h 1m 45s 

any ideas?

i'll give basic overview must in order accomplish this. following decorator accepts 2 parameters, , executes function. missing funcitonality presented comments, add them in:

def log_time(path_to_logfile, interval):     def log(func):         # 'wrap' puppy if needed          def wrapped(*args, **kwargs):             # start timing             func(*args, **kwargs)             # stop timing             open(path_to_logfile, 'a') f:                 pass # functionality         return wrapped     return log 

you can decorate functions , output going written in path_to_logfile. so, example, decorating foo here:

@log_time('foo.txt', 40) def foo(i, j):     print(i, j)  foo(1, 2) 

will take foo , execute it. need time appropriately , write contents file. should experiment decorators more , read on them, nice article on decorators exist @ python wiki.