Pass the Python Institute PCPP1 PCPP-32-101 Questions and answers with CertsForce

If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers)

A. #FFFFFF

B. #0000FF

C. #FF0000

D. #000000

The correct answer is  D. The code is responsible for the support of the inequality operator i.e. i != j . In the given code snippet, the  __ne__  method is a special method that overrides the behavior of the inequality operator  !=  for instances of the  MyClass  class. When the inequality operator is used to compare two instances of  MyClass , the  __ne__  method is called to determine whether the two instances are unequal.

The cget() method in Python is used to read the configuration options of a widget in Tkinter. It retrieves the value of a specified configuration option for a Tkinter widget. Hence, option A is the correct answer.

The correct answers are C and D. Custom application exceptions should normally inherit from Exception, not directly from BaseException. BaseException is intended for system-exiting exceptions such as SystemExit, KeyboardInterrupt, and GeneratorExit, so deriving ordinary errors from it can interfere with normal control flow. PEP 8 also discourages broad or bare except: clauses because they catch too much and can hide programming errors or prevent expected interruption behavior. Specific exception handling is clearer, safer, and easier to debug. Option A reverses the intended guidance: exception hierarchies should help code distinguish what went wrong programmatically. Option B is false because a bare except: can catch system-level exceptions, which is exactly why it should be avoided.

The unbind_all() method in Tkinter is used to remove all event bindings from a widget. It is a method of the widget object and can be called on any widget in the Tkinter application. Therefore, option A is the correct answer.

Option B is incorrect because the method can be called on any widget, not just the main window widget.

Option C is correct as unbind_all() does not take any parameters.

Option D is incorrect because the method only removes event bindings and does not cause the widgets to disappear.

So, the correct answers are A and C.

The correct answer is A. In Tkinter event handling, an event object contains information about the event that occurred. One of its useful attributes is widget, which refers to the actual widget object that caused or received the event. This is not merely the widget’s name as text; it is a reference to the widget instance itself. That means the event handler can inspect or manipulate the widget directly, for example by reading its configuration or changing its displayed value. Option B and option D are incorrect because they describe a name, not an object reference. Option C is unrelated, since run() is not part of Tkinter event object semantics.

The correct answer is  C. Excalibur is the value passed to an instance variable . In the given code snippet,  self.name  is an instance variable of the  Sword  class. When an instance of the  Sword  class is created with  varl = Sword('Excalibur') , the value  'Excalibur'  is passed as an argument to the  __init__  method and assigned to the  name  instance variable of the  varl  object.

The code defines a class called  Sword  with an  __init__  method that takes one parameter  name . When a new instance of the  Sword  class is created with  varl = Sword('Excalibur') , the value of the  'Excalibur'  string is passed as an argument to the  __init__  method, and assigned to the  self.name  instance variable of the  varl  object.

The correct answers are C and D. PEP 8 recommends surrounding top-level function and class definitions with two blank lines. This improves readability by clearly separating major program units in a module. Inside a class, method definitions should be separated by a single blank line because methods are more closely related and need less visual separation than top-level definitions. Option A is incorrect because imports are commonly grouped into standard library imports, third-party imports, and local application imports, with blank lines separating those groups. Option B is incorrect because one blank line is insufficient for top-level functions and classes under PEP 8. These spacing rules support clean, predictable, maintainable Python code layout.

According to PEP 8, Python's official style guide, line breaks before binary operators produce more readable code, especially in code blocks with long expressions. This is stated in several sources (1,2,6,8) and is a widely accepted convention.

Composition is an object-oriented design concept that models a  has-a relationship . In composition, a class known as  composite  contains an object of another class known as  component .  In other words, a composite class has a component of another class 1 .

B. Composition allows a class to be projected as a container of different classes.

Composition is a concept in Python that allows for building complex objects out of simpler objects, by aggregating one or more objects of another class as attributes. The objects that are aggregated are generally considered to be parts of the whole object, and the containing object is often viewed as a container for the smaller objects.

In composition, objects are combined in a way that allows for greater flexibility and modifiability than what inheritance can offer. With composition, it is possible to create new objects by combining existing objects, by using a container object to host other objects. By contrast, with inheritance, new objects extend the behavior of their parent classes, and are limited by that inheritance hierarchy.