Assigning a function return as another functions parameter

Question

I've got this class and these functions below. Is there a way to assign the return value inside new_number to the parameter number in initial girl constructor?

class girl(person):
    def __init__(self, number, interest):
        self.number = number
        self.interest = interest
        super().__init__()
    def new_number(self):
        n = '0000000000'
        while '9' in n[3:6] or n[3:6]=='000' or n[6]==n[7]==n[8]==n[9]:
            n = str(random.randint(10**9, 10**10-1))
        return n[:3] + '-' + n[3:6] + '-' + n[6:]

does new_number function have to be inside Girl class?

ettanany
– ettanany

2016-11-23 08:33:35 +00:00
Commented Nov 23, 2016 at 8:33 — ettanany
– ettanany, Commented Nov 23, 2016 at 8:33
Er, yes, there is - by calling it.

Daniel Roseman
– Daniel Roseman

2016-11-23 08:34:12 +00:00
Commented Nov 23, 2016 at 8:34 — Daniel Roseman
– Daniel Roseman, Commented Nov 23, 2016 at 8:34

DeepSpace · Accepted Answer · 2016-11-23 08:36:53Z

5

If you are always going to assign it to self.number then don't even accept it as a parameter. Simply call it and assign it:

class girl(person):
    def __init__(self, interest):
        self.number = self.new_number()
        self.interest = interest
        super().__init__()

    def new_number(self):
        n = '0000000000'
        while '9' in n[3:6] or n[3:6]=='000' or n[6]==n[7]==n[8]==n[9]:
            n = str(random.randint(10**9, 10**10-1))
        return n[:3] + '-' + n[3:6] + '-' + n[6:]

Note that new_number can be moved outside of the class as it has nothing to do with it, or it can be made static.

edited Nov 23, 2016 at 8:36

answered Nov 23, 2016 at 8:33

DeepSpace

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1 Comment

Kelvin Davis Over a year ago

So dont use it as a paramter, just call it when its needed. Gotcha!

Afiz · Accepted Answer · 2016-11-23 08:44:14Z

1

Try this it should be working. you need not to pass number since you are going to call new_number method.

class Girl():
    def __init__(self, interest=0):
        self.number = self.new_number()
        self.interest = interest
        super().__init__()
    def new_number(self):
        n = '0000000000'
        while '9' in n[3:6] or n[3:6]=='000' or n[6]==n[7]==n[8]==n[9]:
            n = str(random.randint(10**9, 10**10-1))
        num_from_new_number = n[:3] + '-' + n[3:6] + '-' + n[6:]
        return num_from_new_number

answered Nov 23, 2016 at 8:44

Afiz

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Comments

xtt · Accepted Answer · 2016-11-23 08:36:49Z

0

You may just assign the number of self.number:

class girl(person):
    def __init__(self, number, interest):
        self.number = number
        self.interest = interest
        super().__init__()
    def new_number(self):
        n = '0000000000'
        while '9' in n[3:6] or n[3:6]=='000' or n[6]==n[7]==n[8]==n[9]:
            n = str(random.randint(10**9, 10**10-1))
    self.number = n[:3] + '-' + n[3:6] + '-' + n[6:]   # Assign it here

Note that in python, the variable self stands for the object itself, so you can manipulate it directly in your class functions.

You can do assignment or initialization like this self.propertyA = someCalculation()

edited Nov 23, 2016 at 8:36

answered Nov 23, 2016 at 8:34

xtt

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1 Comment

Kelvin Davis Over a year ago

Wow classes are far more friendly in python than in c++

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