analyse the document

### Document Analysis: Week 7 Exercises

#### Overview
The document contains a series of exercises focused on Object-Oriented Programming (OOP) concepts in Python. The exercises cover creating classes, initializing objects, modifying object properties, and manipulating dictionaries.

#### Key Exercises and Concepts

1. **Creating a Class and Setting Variables**
- **Task**: Create a class `MyClass` with a variable `x` set to 2.
- **Example**:

     class MyClass:
         x = 2

2. **Creating an Object and Accessing Variables**
- **Task**: Create an object `p1` of `MyClass` and print the value of `x`.
- **Example**:

     p1 = MyClass()
     print(p1.x)

3. **Initializing Objects with `__init__` Method**
- **Task**: Define a class `Person` with an `__init__` method to initialize `name` and `age`.
- **Example**:

     class Person:
         def __init__(self, name, age):
             self.name = name
             self.age = age

4. **Using Object Methods to Print Values**
- **Task**: Create a class `Brother` with an `__init__` method and print `name` and `age` using object methods.
- **Example**:

     class Brother:
         def __init__(self, name, age):
             self.name = name
             self.age = age
         
         def print_info(self):
             print(f"Name: {self.name}, Age: {self.age}")
     
     b1 = Brother("John", 25)
     b1.print_info()

5. **Printing Within the Function Using Concatenation**
- **Task**: Similar to the previous task, but print within the `__init__` method.
- **Example**:

     class Brother:
         def __init__(self, name, age):
             self.name = name
             self.age = age
             print(f"Name: {self.name}, Age: {self.age}")
     
     b1 = Brother("John", 25)

6. **Renaming `self` Parameter**
- **Task**: Rename `self` to another variable name in the `__init__` method.
- **Example**:

     class Brother:
         def __init__(this, name, age):
             this.name = name
             this.age = age
             print(f"Name: {this.name}, Age: {this.age}")
     
     b1 = Brother("John", 25)

7. **Modifying Object Properties**
- **Task**: Modify an object property after initialization.
- **Example**:

     b1.age = 30
     print(b1.age)

8. **Deleting Object Properties**
- **Task**: Delete an object property using the `del` keyword.
- **Example**:

     del b1.age

9. **Deleting Objects**
- **Task**: Delete the entire object using the `del` keyword.
- **Example**:

     del b1

10. **Dictionary Manipulation**
- **Task**: Use the `get` function to access a dictionary value.
- **Example**:

      guitar = {
          "brand": "Gibson",
          "model": "Les Paul",
          "year": 1963
      }
      print(guitar.get("model"))

- **Task**: Change a dictionary value.
- **Example**:

      guitar["year"] = 1968

- **Task**: Add a new key-value pair to the dictionary.
- **Example**:

      guitar["colour"] = "red"

- **Task**: Remove a key-value pair from the dictionary using the `pop` method.
- **Example**:

      guitar.pop("model")

#### Summary
The document provides a comprehensive set of exercises to practice fundamental OOP concepts in Python, including class creation, object initialization, property manipulation, and dictionary operations. Each exercise builds upon the previous ones, gradually increasing in complexity. This structured approach helps reinforce understanding and application of OOP principles.