Rückgabe-Methode aus der Klasse

Question

Ich bin neu in Python und Lernklassen. Ich habe Probleme gehabt, die Methode charge in der folgenden Klasse zurückzugeben. Ich habe versucht mit .fee und charge funktionieren beide nicht.

class Job: 

rate = 1.04 


def __init__(self, location, salary, description, fee) : 
    self.location = location 
    self.salary = salary 
    self.description = description 
    self.fee = fee 



def Charge(self): 
    self.fee = int(self.fee + Job.rate) 


job1=Job("london",23000,"Accounts Assistant",1200) 
job2=Job("london",25000,"Accounts Assistant",500) 

job1.rate = 1.05 

job1.charge() 
print(job1.fee) 

Answer 1

Vielleicht ein bisschen Formatierung und einige Kommentare könnten helfen. Ich setze den Fall von charge richtig auf Charge Methodenname. Ich habe Charge2 den Unterschied zwischen Job.rate und self.rate in dem Verfahren

class Job: 

    rate = 1.04 

    def __init__(self, location, salary, description, fee) : 
     self.location = location 
     self.salary = salary 
     self.description = description 
     self.fee = fee 

    def Charge(self): 
     self.fee = int(self.fee + Job.rate) # use class amount 1.04 
    def Charge2(self): 
     self.fee = int(self.fee + self.rate) # use instance (11.05 set below) 

job1 = Job("london",23000,"Accounts Assistant",1200) # create instance 
job2 = Job("london",25000,"Accounts Assistant",500) # create instance 

job1.rate = 11.05 

job1.Charge() # execute, adds 1.04 to 1200, then make int of that 
print(job1.fee) # outputs 1201 
job1.Charge2() # execute, adds 11.05 to 1201, then make int of that 
print(job1.fee) # outputs 1212 
print(job2.fee) # outputs 500 
job1.Charge2() # execute, adds 11.05 to 1212, then make int of that 
print(job1.fee) # outputs 1223 
job1.Charge() # execute, adds 1.04 to 1223, then make int of that 
print(job1.fee) # outputs 1224