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Questions and Answers
Questions and Answers
What is the main approach to learning design in this field?
What is the main approach to learning design in this field?
- Learning from historical design failures
- Studying examples familiar to readers (correct)
- Studying complex theoretical frameworks
- Memorizing programming languages
Who is the target audience for the book?
Who is the target audience for the book?
- Non-technical individuals
- Experienced software designers only
- Complete beginners to programming
- Readers with some programming experience (correct)
What is the core of design according to the text?
What is the core of design according to the text?
- Creating visually appealing interfaces
- Figuring out pieces and interactions in a small number of ways (correct)
- Following industry standards
- Writing the most efficient code
What is the basis for the approach to design mentioned in the text?
What is the basis for the approach to design mentioned in the text?
What is the preferred level of abstraction for experts, as mentioned in the text?
What is the preferred level of abstraction for experts, as mentioned in the text?
How is source code and program in memory described in the text?
How is source code and program in memory described in the text?
What does treating code like data enable us to do, according to the text?
What does treating code like data enable us to do, according to the text?
Under what license is the written material in the book available?
Under what license is the written material in the book available?
What does the Hippocratic License allow you to do?
What does the Hippocratic License allow you to do?
What are contributors required to abide by?
What are contributors required to abide by?
Where can you find the source for the book?
Where can you find the source for the book?
Under what license is the software covered?
Under what license is the software covered?
What should you do if you want to improve the material, add new material, or ask questions?
What should you do if you want to improve the material, add new material, or ask questions?
What do all royalties from this book go to?
What do all royalties from this book go to?
How is Python source code displayed in the book?
How is Python source code displayed in the book?
What is the preferred way to write functions in the book?
What is the preferred way to write functions in the book?
What is a specification like the one mentioned in the text sometimes called?
What is a specification like the one mentioned in the text sometimes called?
What reduces cognitive load by allowing the people using related things to ignore their differences?
What reduces cognitive load by allowing the people using related things to ignore their differences?
What do the bytes in a function represent, as mentioned in the text?
What do the bytes in a function represent, as mentioned in the text?
What is created in memory when Python executes a function?
What is created in memory when Python executes a function?
What is it called when we create an alias for a function by assigning it to another variable?
What is it called when we create an alias for a function by assigning it to another variable?
What was object-oriented programming (OOP) historically invented to solve?
What was object-oriented programming (OOP) historically invented to solve?
What must an object provide in order to be considered a shape?
What must an object provide in order to be considered a shape?
What does a function represent in terms of bytes?
What does a function represent in terms of bytes?
What is the term for the process of deriving classes from a base class?
What is the term for the process of deriving classes from a base class?
What is the term for allowing the people using related things to ignore their differences?
What is the term for allowing the people using related things to ignore their differences?
What is the term for creating an alias for a function by assigning it to another variable?
What is the term for creating an alias for a function by assigning it to another variable?
What does a specification for an object like a generic shape in a drawing package sometimes called?
What does a specification for an object like a generic shape in a drawing package sometimes called?
What is a method in Python?
What is a method in Python?
How can objects be thought of in Python?
How can objects be thought of in Python?
How can the problem of different behaviors for individual objects be solved in Python?
How can the problem of different behaviors for individual objects be solved in Python?
How are constructors implemented in Python?
How are constructors implemented in Python?
What is the mechanism called in Python for handling different numbers of arguments?
What is the mechanism called in Python for handling different numbers of arguments?
How can multiple inheritance be implemented in Python?
How can multiple inheritance be implemented in Python?
What is the tool used to share code in Python?
What is the tool used to share code in Python?
What is the parameter used to capture all the positional arguments of a method being called in Python?
What is the parameter used to capture all the positional arguments of a method being called in Python?
What is the function that finds a method to call in Python?
What is the function that finds a method to call in Python?
How are class methods and static methods added to dictionary-based objects and classes in Python?
How are class methods and static methods added to dictionary-based objects and classes in Python?
What is the key used to implement constructors in Python?
What is the key used to implement constructors in Python?
What allows taking a list or dictionary full of arguments and spreading them out in a call to match a function’s parameters in Python?
What allows taking a list or dictionary full of arguments and spreading them out in a call to match a function’s parameters in Python?
What is the historical motivation for inventing object-oriented programming (OOP)?
What is the historical motivation for inventing object-oriented programming (OOP)?
What is the term used to describe the specification for an object like a generic shape in a drawing package?
What is the term used to describe the specification for an object like a generic shape in a drawing package?
What reduces cognitive load by allowing the people using related things to ignore their differences in object-oriented programming?
What reduces cognitive load by allowing the people using related things to ignore their differences in object-oriented programming?
What are the bytes in a function representing in object-oriented programming?
What are the bytes in a function representing in object-oriented programming?
How is a function treated in object-oriented programming?
How is a function treated in object-oriented programming?
What is created in memory when Python executes a function?
What is created in memory when Python executes a function?
What is the term for creating an alias for a function by assigning it to another variable in Python?
What is the term for creating an alias for a function by assigning it to another variable in Python?
What is the term for the process of deriving classes from a base class in object-oriented programming?
What is the term for the process of deriving classes from a base class in object-oriented programming?
What allows the people using related things to ignore their differences in object-oriented programming?
What allows the people using related things to ignore their differences in object-oriented programming?
How can a specification like the one mentioned in the text sometimes be called in object-oriented programming?
How can a specification like the one mentioned in the text sometimes be called in object-oriented programming?
What is the mechanism called in Python for handling different numbers of arguments?
What is the mechanism called in Python for handling different numbers of arguments?
What term is used to describe the process of sharing code in Python?
What term is used to describe the process of sharing code in Python?
Explain the concept of spreading in Python and how it allows matching a function's parameters with a list or dictionary full of arguments.
Explain the concept of spreading in Python and how it allows matching a function's parameters with a list or dictionary full of arguments.
Describe the implementation of constructors in Python, and how they are used to create objects of a specific type.
Describe the implementation of constructors in Python, and how they are used to create objects of a specific type.
What is inheritance in Python, and how does it enable code sharing?
What is inheritance in Python, and how does it enable code sharing?
Explain the concept of multiple inheritance in Python and how it can be implemented using dictionaries.
Explain the concept of multiple inheritance in Python and how it can be implemented using dictionaries.
How can the problem of different behaviors for individual objects be solved in Python, and what approach is used to achieve this?
How can the problem of different behaviors for individual objects be solved in Python, and what approach is used to achieve this?
Explain the role of the final version of call in Python and how it captures and spreads positional arguments of the method being called.
Explain the role of the final version of call in Python and how it captures and spreads positional arguments of the method being called.
What is monkey patching in Python, and how can it be understood in terms of dictionaries containing references to properties and functions?
What is monkey patching in Python, and how can it be understood in terms of dictionaries containing references to properties and functions?
Explain the role of varargs in Python and how it enables functions to handle different numbers of arguments.
Explain the role of varargs in Python and how it enables functions to handle different numbers of arguments.
What is the purpose of the _new key in dictionaries that implement classes in Python, and how does it relate to the concept of constructors?
What is the purpose of the _new key in dictionaries that implement classes in Python, and how does it relate to the concept of constructors?
How does Python use recursion to find a method to call, and what differences in understandability and efficiency can be observed compared to using a loop?
How does Python use recursion to find a method to call, and what differences in understandability and efficiency can be observed compared to using a loop?
Explain the concept of objects as a special kind of dictionary in Python, and how methods are related to objects.
Explain the concept of objects as a special kind of dictionary in Python, and how methods are related to objects.
What is the role of dictionaries in implementing objects in Python, and how does it enable every single object to behave slightly differently?
What is the role of dictionaries in implementing objects in Python, and how does it enable every single object to behave slightly differently?
Questions and Answers
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Study Notes
Study Notes
Python Object System Overview
- Functions can be stored in data structures like lists and dictionaries without altering their connection to the original name.
- Objects can be thought of as a special kind of dictionary, and a method is a function that takes an object of the right kind as its first parameter.
- Implementing objects as dictionaries allows every single object to behave slightly differently, but we want objects to store different values and the same behaviors.
- Storing the methods in a dictionary called Square that corresponds to a class and having each individual square contain a reference to that higher-level dictionary can solve the problem of different behaviors for individual objects.
- Methods defined so far operate on the values stored in the object’s dictionary, but none of them take any extra arguments as input.
- Python provides a mechanism called varargs for handling different numbers of arguments, and spreading allows taking a list or dictionary full of arguments and spreading them out in a call to match a function’s parameters.
- Inheritance is a tool used to share code, and it works in Python by adding a method called density to the original Shape class that uses other methods defined by the class.
- Constructors are implemented by giving the dictionaries that implement classes a special key _new whose value is the function that builds something of that type.
- Multiple inheritance, class methods, static methods, and monkey patching can all be understood in terms of dictionaries that contain references to properties, functions, and other dictionaries.
- The final version of call declares a parameter called *args to capture all the positional arguments of the method being called and then spreads them in the actual call.
- Multiple inheritance can be implemented using dictionaries, and class methods and static methods can be added to dictionary-based objects and classes.
- The find function that finds a method to call can be modified to use recursion instead of a loop, and differences in understandability and efficiency can be observed.
Python Object System Overview
- Functions can be stored in data structures like lists and dictionaries without altering their connection to the original name.
- Objects can be thought of as a special kind of dictionary, and a method is a function that takes an object of the right kind as its first parameter.
- Implementing objects as dictionaries allows every single object to behave slightly differently, but we want objects to store different values and the same behaviors.
- Storing the methods in a dictionary called Square that corresponds to a class and having each individual square contain a reference to that higher-level dictionary can solve the problem of different behaviors for individual objects.
- Methods defined so far operate on the values stored in the object’s dictionary, but none of them take any extra arguments as input.
- Python provides a mechanism called varargs for handling different numbers of arguments, and spreading allows taking a list or dictionary full of arguments and spreading them out in a call to match a function’s parameters.
- Inheritance is a tool used to share code, and it works in Python by adding a method called density to the original Shape class that uses other methods defined by the class.
- Constructors are implemented by giving the dictionaries that implement classes a special key _new whose value is the function that builds something of that type.
- Multiple inheritance, class methods, static methods, and monkey patching can all be understood in terms of dictionaries that contain references to properties, functions, and other dictionaries.
- The final version of call declares a parameter called *args to capture all the positional arguments of the method being called and then spreads them in the actual call.
- Multiple inheritance can be implemented using dictionaries, and class methods and static methods can be added to dictionary-based objects and classes.
- The find function that finds a method to call can be modified to use recursion instead of a loop, and differences in understandability and efficiency can be observed.
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