PCPP-32-101 2.1 Python Enhancement Proposals and Python Philosophy PCPP-32-1 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   You are mentoring a colleague who wants to submit a proposal that changes the syntax of the `with` statement. They are unsure which PEP type to use. According to PEP 1, which category does this proposal fall under?

   • AInformational PEP
   • BProcess PEP
   • CStandards Track PEP
   • DMeta PEP
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2. 17expert · hard

   Your team is debating whether to use a metaclass to implement a singleton pattern. A senior developer quotes 'There should be one-- and preferably only one --obvious way to do it' from PEP 20. What is the most appropriate interpretation in this context?

   • AUse the simplest, most common approach to implement the singleton, such as a module-level variable, rather than a metaclass.
   • BImplement both approaches and let the user choose.
   • CAvoid implementing the singleton pattern altogether.
   • DUse a metaclass because it is the most powerful approach.
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4. 18application · medium

   Your team is deciding whether to adopt a new coding standard that is not yet part of PEP 8. A colleague suggests that the standard should be proposed as a PEP. What is the most important reason to do this?

   • ATo ensure the standard is formally reviewed and accepted by the Python community.
   • BTo make the standard mandatory for all Python developers.
   • CTo avoid having to follow PEP 8.
   • DTo get the standard implemented in the Python interpreter.
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5. 19application · easy

   During a code review, you notice a function named `calculate_total` that has a parameter named `taxRate`. The function body uses `taxRate * 0.1` to compute a discount. Your team follows PEP 8 strictly. What is the most appropriate feedback to give the developer?

   • AChange the function name to `CalculateTotal` to match the parameter style.
   • BAdd a comment explaining that `taxRate` is a local variable and not a global constant.
   • CRename the parameter to `tax_rate` to follow snake_case naming convention.
   • DLeave it as is because PEP 8 only applies to module-level variables.
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6. 20foundation · easy

   Which statement best describes the role of PEPs in the Python community?

   • AThey are legally binding contracts between Python developers
   • BThey are automatically implemented once submitted
   • CThey are informal blog posts that anyone can publish without review
   • DThey are the formal channel for proposing and discussing major changes to Python
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