QUESTION: 17

Look at the following examples of comments and docstrings in Python Select the ones that are useful and compliant with PEP 8 recommendations (Select the two best answers.)

Answer(s): B,D

Explanation:

According to PEP 8 recommendations, the two best options are Option B and Option D. Option B follows PEP 8's suggestion that all lines should be limited to 79 characters and for longer blocks of text like docstrings or comments, the length should be limited to 72 characters. Option D follows PEP 8's conventions for writing good documentation strings (a.k.a. "docstrings") which are immortalized in PEP 257. It suggests writing docstrings for all public modules, functions, classes, and methods.

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QUESTION: 18

Select the true statement related to PEP 257.

String literals that occur immediately after another docstring are called attribute docstrings.
Attribute docstrings and Additional docstrings are two types of extra docstrings that can be extracted by software tools.
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
String literals that occur immediately after a simple assignment at the top level of a module are called complementary docstrings

Answer(s): B

Explanation:

The true statement related to PEP 257 is Option B. According to PEP 257, string literals occurring elsewhere in Python code may also act as documentation. They are not recognized by the Python bytecode compiler and are not accessible as runtime object attributes (i.e. not assigned to doc), but two types of extra docstrings may be extracted by software tools: String literals occurring immediately after a simple assignment at the top level of a module, class, or init method are called "attribute docstrings". String literals occurring immediately after another docstring are called "additional docstrings".

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QUESTION: 19

Select the true statements related to PEP 8 programming recommendations for code writing. (Select two answers:)

You should use the not ... is operator (e.g. if not spam is None:), rather than the is not operator (e.g. if spam is not None:), to increase readability.
You should make object type comparisons using the ismstanceQ method (e.g. if isinstance (obj, int) :) instead of comparing types directly (eg if type(obj) is type(i)).
You should write code in a way that favors the CPython implementation over PyPy, Cython. and Jython.
You should not write string literals that rely on significant trailing whitespaces as they may be visually indistinguishable, and certain editors may trim them

Answer(s): B,D

Explanation:

The two true statements related to PEP 8 programming recommendations for code writing are Option B and Option D.
Option B is true because PEP 8 recommends making object type comparisons using the isinstance() method instead of comparing types directly. Option D is true because PEP 8 recommends not writing string literals that rely on significant trailing whitespaces as they may be visually indistinguishable, and certain editors may trim them.

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QUESTION: 20

Select the true statements related to PEP 8 naming conventions. (Select two answers.)

Function and variable names should be lower-case with words separated by underscores.
You should always use self as the first argument to instance methods, and cls as the first argument to class methods.
Modules should have short names written in CameICase.
Constants should be written in all lower-case letters with words separated by underscores

Answer(s): A,D

Explanation:

Option A is true because PEP 8 recommends that function and variable names should be lowercase, with words separated by underscores .
Option D is true because PEP 8 recommends that constants should be written in all capital letters with words separated by underscores .
PEP 8 is the official style guide for Python code. It provides guidelines for how to write readable code that follows consistent naming conventions. The aim of PEP 8 is to improve the readability of Python code and make it easier to understand and maintain.
According to PEP 8, variable and function names should be written in all lower-case letters with words separated by underscores, as stated in A. Constants, which are variables whose value is expected to remain constant throughout the code, should be written in all upper-case letters with words separated by underscores, as stated in D.

Reference:

PEP 8 -- Style Guide for Python Code: https://www.python.org/dev/peps/pep-0008/ Python Documentation: https://docs.python.org/3/tutorial/classes.html#classmethods-and- staticmethods

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Free PCPP-32-101 Exam Braindumps (page: 5)

QUESTION: 17

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QUESTION: 18

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QUESTION: 19

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QUESTION: 20

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