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

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.