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Define the instance method 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   Use Python, please.

Define the instance method 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   Use Python, please.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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CHALLENGE ACTIVITY
10.3.2: Defining an instance method.
 
Define the instance method 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
 
Use Python, please.
```python class PersonInfo: def __init__(self): self.num_kids = 0 # FIXME: Write inc_num_kids(self) ''' Your solution goes here ''' person1 = PersonInfo() print('Kids:', person1.num_kids) person1.inc_num_kids() print('New baby, kids now:', person1.num_kids) ``` ### Explanation: This Python script defines a class `PersonInfo` with a constructor (`__init__` method) that initializes an instance variable `num_kids` to 0. - The comment `# FIXME: Write inc_num_kids(self)` indicates that you need to implement a method called `inc_num_kids` within the `PersonInfo` class. This method should increase the `num_kids` count by 1. - After defining the class, an object `person1` is created from the `PersonInfo` class. - The script prints the number of kids using the `print` function, initially showing 0. - The `inc_num_kids()` method is called on `person1` to update the number of kids. - Finally, it prints the updated number of kids, reflecting the addition of a new child.
Transcribed Image Text:```python class PersonInfo: def __init__(self): self.num_kids = 0 # FIXME: Write inc_num_kids(self) ''' Your solution goes here ''' person1 = PersonInfo() print('Kids:', person1.num_kids) person1.inc_num_kids() print('New baby, kids now:', person1.num_kids) ``` ### Explanation: This Python script defines a class `PersonInfo` with a constructor (`__init__` method) that initializes an instance variable `num_kids` to 0. - The comment `# FIXME: Write inc_num_kids(self)` indicates that you need to implement a method called `inc_num_kids` within the `PersonInfo` class. This method should increase the `num_kids` count by 1. - After defining the class, an object `person1` is created from the `PersonInfo` class. - The script prints the number of kids using the `print` function, initially showing 0. - The `inc_num_kids()` method is called on `person1` to update the number of kids. - Finally, it prints the updated number of kids, reflecting the addition of a new child.
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