Define the method object `inc_num_kids()` for `PersonInfo`.

`inc_num_kids` increments the member data `num_kids`.

Sample output for the given program with one call to `inc_num_kids()`:
```
Kids: 0
New baby, kids now: 1
```

Question

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Answer :

codiepienagoya codiepienagoya · Answer 1 · 2025-01-11T09:32:43-05:00

Answer:

The answer to this question can be given as:

Program:

#define class.

class PersonInfo:

def __init__(self): #constructor

self.num_kids = 0

def inc_num_kids(self): #define function inc_num_kids()

self.num_kids = self.num_kids + 1

return self.num_kids #return value.

p= PersonInfo() # creating object

print('Kids:', p.num_kids) #print value

p.inc_num_kids() #call function

print('New baby, kids now:', p.num_kids) #print value

Output:

Kids: 0

New baby, kids now: 1

Explanation:

The description of the above python program as follows:

In this program firstly we define the class that is PersonInfo. In this class we define the constructor that is def __init__() and one function that is def inc_num_kids().
The constructor is called automatically when the class object is created. In this constructor, we use the self as a parameter that is used to access variables that belong to class.
In the constructor, we define the variable that is "num_kids". We assign value to a variable that is "0" and use the self for holding reference to the variable.
Then we define the function. In this function, we increment the value of the variable by 1 and return its value.
Then we create a class object that is p and call the function and print its value.