I have a list of functions that do the same tasks in different ways. Let's call them scrapper_german, scrapper_english, scrapper_spanish. I want to make my program know things about this functions, like how effective they are in some tasks. I can use a dictionary.
function_info = { 'scrapper_english': ('English', 'FullyTested'),
...
}
But is there a way to insert those properties, those attributes, into the function? Like a class can have
my_dog.favourite_foods = ('Cow', 'Pork')
Propably the best way is to use class __call__ function to imitate your function with class possibilities
something like this:
class EnglishScraper:
info_1=None
info_2=None
info_3=None
info_4=None
performance=None
def __init__(self):
"""
do you want to set some info in the constructor?
"""
def __call__(self,*args,**kwargs): # or instead of args/kwargs you can use something specific
"""
the function
you can use any attributes -> self.info....
"""
print('hello from function')
scrapper_english = EnglishScraper()
# __call__ is called like this
scrapper_english()
import time
# measure and save performance attribute
start = time.time()
scrapper_english()
performance = time.time()-start
scrapper_english.performance = performance
def f(): pass; f.whatever = "should work"
f is just a regular function, not a full-fledged regular class instance. It has no __init__(), method inheritance, siblings sharing class attributes, etc. It's only a function with an attribute. And in this case it's all it needs.Python functions are objects and as such you might set and get attributes, consider that
def somefunc(x):
return x
print(isinstance(somefunc,object))
somefunc.effect = "123"
print(somefunc.effect)
output
True
123
That being said as you want to make my program know things about this functions, like how effective they are in some tasks storing that information in structure independent from your functions seem to provide greater flexibility and you might easily to provide such data for someone to analyse it without exposing functions themselves.
def function_x(): pass-function_x.SomeAttribute = "whatever"...