将变量从一个函数传递到另一个函数

Question

I have a function with way to much going on in it so I've decided to split it up into smaller functions and call all my block functions inside a single function. --> eg

def main_function(self):
  time_subtraction(self)
  pay_calculation(self,todays_hours)

and -->

def time_subtraction(self):
    todays_hours = datetime.combine(datetime(1,1,1,0,0,0), single_object2) - datetime.combine(datetime(1,1,1,0,0,0),single_object)
    return todays_hours

So what im trying to accomplish here is to make todays_hours available to my main_function . I've read lots of documentation and other resources but apparently I'm still struggling with this aspect.

EDIT -- This is not a method of the class. Its just a file where i have a lot of functions coded and i import it where needed.

Answer 1

If you want to pass the return value of one function to another, you need to either nest the function calls:

pay_calculation(self, time_subtraction(self))

… or store the value so you can pass it:

hours = time_subtraction(self)
pay_calculation(self, hours)

---

As a side note, if these are methods in a class, you should be calling them as self.time_subtraction() , self.pay_calculation(hours) , etc., not time_subtraction(self) , etc. And if they aren't methods in a class, maybe they should be.

Often it makes sense for a function to take a Spam instance, and for a method of Spam to send self as the first argument, in which case this is all fine. But the fact that you've defined def time_subtraction(self): implies that's not what's going on here, and you're confused about methods vs. normal functions.