PCPP-32-101 Practice Questions

A.  

It is recommended that you use line breaks before binary operators to improve code readability.

B.  

It is permissible to use line breaks before or after a binary operator as long as the convention is consistent locally However, for new code it is recommended that break lines should be used only after binary operators.

C.  

It is recommended that you use line breaks after binary operators to improve code readability.

D.  

There is no specific PEP 8 recommendation related to using line breaks with binary operators.

A.  

def net_expense(q, price):

"""Return the total cost of items before tax."""

return q * price

B.  

n = n - 1 # Decrement n by 1.

C.  

val = val + 1.15 # Compensate for diminished value.

D.  

def total_cost(q):

'''Takes the q argument and multiplies it by 1.15.'''

return q * 1.15

A.  

The ©property decorator should be defined after the method that is responsible for setting an encapsulated attribute.

B.  

The @property decorator designates a method which is responsible for returning an attribute value

C.  

The ©property decorator marks the method whose name will be used as the name of the instance attribute

D.  

The ©property decorator should be defined before the methods that are responsible for setting and deleting an encapsulated attribute

A.  

There is no run() method defined for the C class.

B.  

It causes MRO inconsistency.

C.  

Nothing. The code is fine.

D.  

There are no __init__() methods — each class should implement this method.

A.  

When designing exception hierarchies, you should focus on stating that a problem occurred, rather than programmatically trying to answer the question about what actually went wrong.

B.  

You should generally use “bare” except: clauses, as they will not catch SystemExit and KeyboardInterrupt exceptions, making it more difficult to interrupt a program using keyboard shortcuts.

C.  

You should derive exceptions from the Exception class, rather than from the BaseException class.

D.  

You should generally limit the use of a “bare” except: clause and, whenever possible, use specific exceptions instead.

A.  

String literals that occur immediately after another docstring are called attribute docstrings.

B.  

Attribute docstrings and Additional docstrings are two types of extra docstrings that can be extracted by software tools.

C.  

String Iiterals that occur in places other than the first statement in a module, function, or class definition can act as documentation They are recognized by the Python bytecode compiler and are accessible as runtime object attributes

D.  

String literals that occur immediately after a simple assignment at the top level of a module are called complementary docstrings

A.  

The sqlite3 module provides an interface compliant with the DB-API 2.0.

B.  

The special name memory is used to create a database in RAM.

C.  

The sqhte3 module does not support transactions.

D.  

The fetchall method returns an empty list when no rows are available

A.  

It can be used to read widget attributes.

B.  

It has the same effect as the config () method.

C.  

It can be used to set new values to widget attributes.

D.  

It can be replaced with a dictionary-like access manner.

A.  

It can be invoked from any widget

B.  

It can be invoked from the main window widget only

C.  

It is parameterless

D.  

It causes all the widgets to disappear

A.  

integers, floating-point numbers, complex numbers

B.  

function and class definitions

C.  

None, booleans

D.  

strings, bytes, bytearrays